27720152572515 has 96 divisors (see below), whose sum is σ = 48158366434560. Its totient is φ = 13609391298048.

The previous prime is 27720152572433. The next prime is 27720152572559. The reversal of 27720152572515 is 51527525102772.

It is not a de Polignac number, because 27720152572515 - 2¹⁶ = 27720152506979 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1612659541 + ... + 1612676729.

It is an arithmetic number, because the mean of its divisors is an integer number (501649650360).

Almost surely, 2^{27720152572515} is an apocalyptic number.

27720152572515 is a deficient number, since it is larger than the sum of its proper divisors (20438213862045).

27720152572515 is a wasteful number, since it uses less digits than its factorization.

27720152572515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18933 (or 18920 counting only the distinct ones).

The product of its (nonzero) digits is 3430000, while the sum is 51.

The spelling of 27720152572515 in words is "twenty-seven trillion, seven hundred twenty billion, one hundred fifty-two million, five hundred seventy-two thousand, five hundred fifteen".