63256387902 has 32 divisors (see below), whose sum is σ = 130970317824. Its totient is φ = 20346460800.

The previous prime is 63256387861. The next prime is 63256387903. The reversal of 63256387902 is 20978365236.

It is a super-2 number, since 2×63256387902² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63256387903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425499 + ... + 554582.

It is an arithmetic number, because the mean of its divisors is an integer number (4092822432).

Almost surely, 2^63256387902 is an apocalyptic number.

63256387902 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

63256387902 is an abundant number, since it is smaller than the sum of its proper divisors (67713929922).

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

63256387902 is a wasteful number, since it uses less digits than its factorization.

63256387902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980464.

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 63256387902 in words is "sixty-three billion, two hundred fifty-six million, three hundred eighty-seven thousand, nine hundred two".