2975797978978 has 24 divisors (see below), whose sum is σ = 5139265322160. Its totient is φ = 1281444102360.

The previous prime is 2975797978973. The next prime is 2975797978981. The reversal of 2975797978978 is 8798797975792.

It is a super-2 number, since 2×2975797978978² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2975797978973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187337688 + ... + 187353571.

It is an arithmetic number, because the mean of its divisors is an integer number (214136055090).

Almost surely, 2^{2975797978978} is an apocalyptic number.

2975797978978 is a deficient number, since it is larger than the sum of its proper divisors (2163467343182).

2975797978978 is a wasteful number, since it uses less digits than its factorization.

2975797978978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374691310 (or 374691291 counting only the distinct ones).

The product of its digits is 70573265280, while the sum is 94.

The spelling of 2975797978978 in words is "two trillion, nine hundred seventy-five billion, seven hundred ninety-seven million, nine hundred seventy-eight thousand, nine hundred seventy-eight".