3857979860515 has 32 divisors (see below), whose sum is σ = 5580032841216. Its totient is φ = 2525940764160.

The previous prime is 3857979860507. The next prime is 3857979860519. The reversal of 3857979860515 is 5150689797583.

It is not a de Polignac number, because 3857979860515 - 2³ = 3857979860507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3857979860519) 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, 89678097 + ... + 89721106.

It is an arithmetic number, because the mean of its divisors is an integer number (174376026288).

Almost surely, 2^{3857979860515} is an apocalyptic number.

3857979860515 is a deficient number, since it is larger than the sum of its proper divisors (1722052980701).

3857979860515 is a wasteful number, since it uses less digits than its factorization.

3857979860515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179399259.

The product of its (nonzero) digits is 571536000, while the sum is 73.

The spelling of 3857979860515 in words is "three trillion, eight hundred fifty-seven billion, nine hundred seventy-nine million, eight hundred sixty thousand, five hundred fifteen".