15155760615491 has 8 divisors (see below), whose sum is σ = 16744983596064. Its totient is φ = 13644060707200.

The previous prime is 15155760615487. The next prime is 15155760615511. The reversal of 15155760615491 is 19451606755151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15155760615491 - 2² = 15155760615487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15155760615431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19380767660 + ... + 19380768441.

It is an arithmetic number, because the mean of its divisors is an integer number (2093122949508).

Almost surely, 2^{15155760615491} is an apocalyptic number.

15155760615491 is a deficient number, since it is larger than the sum of its proper divisors (1589222980573).

15155760615491 is a wasteful number, since it uses less digits than its factorization.

15155760615491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38761536141.

The product of its (nonzero) digits is 5670000, while the sum is 56.

The spelling of 15155760615491 in words is "fifteen trillion, one hundred fifty-five billion, seven hundred sixty million, six hundred fifteen thousand, four hundred ninety-one".