1015311954979 has 16 divisors (see below), whose sum is σ = 1189142115840. Its totient is φ = 848695487040.

The previous prime is 1015311954973. The next prime is 1015311954991. The reversal of 1015311954979 is 9794591135101.

It is a cyclic number.

It is not a de Polignac number, because 1015311954979 - 2²⁵ = 1015278400547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1015311954973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13599 + ... + 1425064.

It is an arithmetic number, because the mean of its divisors is an integer number (74321382240).

Almost surely, 2^{1015311954979} is an apocalyptic number.

1015311954979 is a deficient number, since it is larger than the sum of its proper divisors (173830160861).

1015311954979 is a wasteful number, since it uses less digits than its factorization.

1015311954979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441170.

The product of its (nonzero) digits is 1530900, while the sum is 55.

The spelling of 1015311954979 in words is "one trillion, fifteen billion, three hundred eleven million, nine hundred fifty-four thousand, nine hundred seventy-nine".