63397236155904 has 320 divisors, whose sum is σ = 217669874188800. Its totient is φ = 17843143532544.

The previous prime is 63397236155881. The next prime is 63397236155921. The reversal of 63397236155904 is 40955163279336.

63397236155904 is a `hidden beast` number, since 6 + 3 + 3 + 9 + 7 + 2 + 3 + 615 + 5 + 9 + 0 + 4 = 666.

It is a super-2 number, since 2×63397236155904² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1594302 + ... + 11372610.

It is an arithmetic number, because the mean of its divisors is an integer number (680218356840).

Almost surely, 2^{63397236155904} is an apocalyptic number.

63397236155904 is a gapful number since it is divisible by the number (64) 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 63397236155904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108834937094400).

63397236155904 is an abundant number, since it is smaller than the sum of its proper divisors (154272638032896).

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

63397236155904 is an equidigital number, since it uses as much as digits as its factorization.

63397236155904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9778410 (or 9778388 counting only the distinct ones).

The product of its (nonzero) digits is 110224800, while the sum is 63.

The spelling of 63397236155904 in words is "sixty-three trillion, three hundred ninety-seven billion, two hundred thirty-six million, one hundred fifty-five thousand, nine hundred four".