79510378546 has 4 divisors (see below), whose sum is σ = 119265567822. Its totient is φ = 39755189272.

The previous prime is 79510378529. The next prime is 79510378567. The reversal of 79510378546 is 64587301597.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58787336521 + 20723042025 = 242461^2 + 143955^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19877594635 + ... + 19877594638.

Almost surely, 2^79510378546 is an apocalyptic number.

79510378546 is a deficient number, since it is larger than the sum of its proper divisors (39755189276).

79510378546 is a wasteful number, since it uses less digits than its factorization.

79510378546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39755189275.

The product of its (nonzero) digits is 6350400, while the sum is 55.

The spelling of 79510378546 in words is "seventy-nine billion, five hundred ten million, three hundred seventy-eight thousand, five hundred forty-six".