637271148921012 has 18 divisors (see below), whose sum is σ = 1610879848661538. Its totient is φ = 212423716306992.

The previous prime is 637271148920983. The next prime is 637271148921047. The reversal of 637271148921012 is 210129841172736.

It is a happy number.

637271148921012 is a `hidden beast` number, since 6 + 3 + 7 + 271 + 148 + 9 + 210 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 384460958120976 + 252810190800036 = 19607676^2 + 15900006^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×637271148921012² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 637271148921012.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8850988179423 + ... + 8850988179494.

It is an arithmetic number, because the mean of its divisors is an integer number (89493324925641).

Almost surely, 2^{637271148921012} is an apocalyptic number.

It is an amenable number.

637271148921012 is an abundant number, since it is smaller than the sum of its proper divisors (973608699740526).

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

637271148921012 is a wasteful number, since it uses less digits than its factorization.

637271148921012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17701976358927 (or 17701976358922 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 637271148921012 in words is "six hundred thirty-seven trillion, two hundred seventy-one billion, one hundred forty-eight million, nine hundred twenty-one thousand, twelve".