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63431196660 = 223351379114377
BaseRepresentation
bin111011000100110010…
…110011111111110100
320001201121222122201000
4323010302303333310
52014401341243120
645050114403300
74403612163336
oct730462637764
9201647878630
1063431196660
11249a0290987
1210362b90530
135c9b586880
1430da461456
1519b3abd990
hexec4cb3ff4

63431196660 has 192 divisors, whose sum is σ = 215213644800. Its totient is φ = 15416054784.

The previous prime is 63431196641. The next prime is 63431196667. The reversal of 63431196660 is 6669113436.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63431196667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 497392 + ... + 611768.

It is an arithmetic number, because the mean of its divisors is an integer number (1120904400).

Almost surely, 263431196660 is an apocalyptic number.

63431196660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63431196660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107606822400).

63431196660 is an abundant number, since it is smaller than the sum of its proper divisors (151782448140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63431196660 is a wasteful number, since it uses less digits than its factorization.

63431196660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114487 (or 114479 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 63431196660 in words is "sixty-three billion, four hundred thirty-one million, one hundred ninety-six thousand, six hundred sixty".