2159542157479 has 32 divisors (see below), whose sum is σ = 2524989874176. Its totient is φ = 1808624039040.

The previous prime is 2159542157441. The next prime is 2159542157497. The reversal of 2159542157479 is 9747512459512.

It is not a de Polignac number, because 2159542157479 - 2¹¹ = 2159542155431 is a prime.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159542152479) 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, 417946354 + ... + 417951520.

It is an arithmetic number, because the mean of its divisors is an integer number (78905933568).

Almost surely, 2^{2159542157479} is an apocalyptic number.

2159542157479 is a deficient number, since it is larger than the sum of its proper divisors (365447716697).

2159542157479 is a wasteful number, since it uses less digits than its factorization.

2159542157479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9655.

The product of its digits is 31752000, while the sum is 61.

The spelling of 2159542157479 in words is "two trillion, one hundred fifty-nine billion, five hundred forty-two million, one hundred fifty-seven thousand, four hundred seventy-nine".