63870677640 has 1152 divisors, whose sum is σ = 279649843200. Its totient is φ = 12347596800.

The previous prime is 63870677623. The next prime is 63870677641. The reversal of 63870677640 is 4677607836.

It is not an unprimeable number, because it can be changed into a prime (63870677641) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 274122964 + ... + 274123196.

It is an arithmetic number, because the mean of its divisors is an integer number (242751600).

Almost surely, 2^63870677640 is an apocalyptic number.

63870677640 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 63870677640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139824921600).

63870677640 is an abundant number, since it is smaller than the sum of its proper divisors (215779165560).

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

63870677640 is a wasteful number, since it uses less digits than its factorization.

63870677640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 63870677640 in words is "sixty-three billion, eight hundred seventy million, six hundred seventy-seven thousand, six hundred forty".