79540942154 has 8 divisors (see below), whose sum is σ = 119426249280. Its totient is φ = 39732192396.

The previous prime is 79540942153. The next prime is 79540942237. The reversal of 79540942154 is 45124904597.

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

It is a super-2 number, since 2×79540942154² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79540942153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19136744 + ... + 19140899.

It is an arithmetic number, because the mean of its divisors is an integer number (14928281160).

Almost surely, 2^79540942154 is an apocalyptic number.

79540942154 is a deficient number, since it is larger than the sum of its proper divisors (39885307126).

79540942154 is a wasteful number, since it uses less digits than its factorization.

79540942154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38278684.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 79540942154 in words is "seventy-nine billion, five hundred forty million, nine hundred forty-two thousand, one hundred fifty-four".