27157021752120 has 128 divisors (see below), whose sum is σ = 87811130514240. Its totient is φ = 6679238860800.

The previous prime is 27157021752067. The next prime is 27157021752127. The reversal of 27157021752120 is 2125712075172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27157021752127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5373879 + ... + 9120998.

Almost surely, 2^{27157021752120} is an apocalyptic number.

27157021752120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27157021752120 is an abundant number, since it is smaller than the sum of its proper divisors (60654108762120).

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

27157021752120 is a wasteful number, since it uses less digits than its factorization.

27157021752120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14496105 (or 14496101 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 42.

The spelling of 27157021752120 in words is "twenty-seven trillion, one hundred fifty-seven billion, twenty-one million, seven hundred fifty-two thousand, one hundred twenty".