63840260072 has 32 divisors (see below), whose sum is σ = 133412313600. Its totient is φ = 28461291264.

The previous prime is 63840260069. The next prime is 63840260119. The reversal of 63840260072 is 27006204836.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12350408 + ... + 12355575.

It is an arithmetic number, because the mean of its divisors is an integer number (4169134800).

Almost surely, 2^63840260072 is an apocalyptic number.

It is an amenable number.

63840260072 is an abundant number, since it is smaller than the sum of its proper divisors (69572053528).

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

63840260072 is a wasteful number, since it uses less digits than its factorization.

63840260072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24706025 (or 24706021 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 63840260072 in words is "sixty-three billion, eight hundred forty million, two hundred sixty thousand, seventy-two".