637488851072 has 32 divisors (see below), whose sum is σ = 1297018552320. Its totient is φ = 311962626304.

The previous prime is 637488851071. The next prime is 637488851089. The reversal of 637488851072 is 270158884736.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (637488851071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52976768 + ... + 52988799.

It is an arithmetic number, because the mean of its divisors is an integer number (40531829760).

Almost surely, 2^637488851072 is an apocalyptic number.

It is an amenable number.

637488851072 is an abundant number, since it is smaller than the sum of its proper divisors (659529701248).

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

637488851072 is a wasteful number, since it uses less digits than its factorization.

637488851072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105965628 (or 105965616 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 637488851072 in words is "six hundred thirty-seven billion, four hundred eighty-eight million, eight hundred fifty-one thousand, seventy-two".