61990366110480 has 360 divisors, whose sum is σ = 219925746226368. Its totient is φ = 15645921762816.

The previous prime is 61990366110479. The next prime is 61990366110487. The reversal of 61990366110480 is 8401166309916.

It is a happy number.

61990366110480 is a `hidden beast` number, since 6 + 1 + 9 + 90 + 3 + 6 + 61 + 10 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×61990366110480² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61990366110487) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 276182779 + ... + 276407141.

Almost surely, 2^{61990366110480} is an apocalyptic number.

61990366110480 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 61990366110480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109962873113184).

61990366110480 is an abundant number, since it is smaller than the sum of its proper divisors (157935380115888).

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

61990366110480 is a wasteful number, since it uses less digits than its factorization.

61990366110480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225483 (or 225455 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 61990366110480 in words is "sixty-one trillion, nine hundred ninety billion, three hundred sixty-six million, one hundred ten thousand, four hundred eighty".