27938972620512 has 36 divisors (see below), whose sum is σ = 79451453390400. Its totient is φ = 9312990873408.

The previous prime is 27938972620501. The next prime is 27938972620523. The reversal of 27938972620512 is 21502627983972.

27938972620512 is a `hidden beast` number, since 2 + 7 + 9 + 3 + 8 + 97 + 2 + 6 + 20 + 512 = 666.

It is an interprime number because it is at equal distance from previous prime (27938972620501) and next prime (27938972620523).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 27938972620512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48505160512 + ... + 48505161087.

It is an arithmetic number, because the mean of its divisors is an integer number (2206984816400).

Almost surely, 2^{27938972620512} is an apocalyptic number.

It is an amenable number.

27938972620512 is an abundant number, since it is smaller than the sum of its proper divisors (51512480769888).

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

27938972620512 is a wasteful number, since it uses less digits than its factorization.

27938972620512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97010321615 (or 97010321604 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 27938972620512 in words is "twenty-seven trillion, nine hundred thirty-eight billion, nine hundred seventy-two million, six hundred twenty thousand, five hundred twelve".