79111009545 has 16 divisors (see below), whose sum is σ = 127574292480. Its totient is φ = 41860312704.

The previous prime is 79111009531. The next prime is 79111009561. The reversal of 79111009545 is 54590011197.

It is a happy number.

It is not a de Polignac number, because 79111009545 - 2¹³ = 79111001353 is a prime.

It is a super-2 number, since 2×79111009545² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79111009497 and 79111009506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20762140 + ... + 20765949.

It is an arithmetic number, because the mean of its divisors is an integer number (7973393280).

Almost surely, 2^79111009545 is an apocalyptic number.

It is an amenable number.

79111009545 is a deficient number, since it is larger than the sum of its proper divisors (48463282935).

79111009545 is a wasteful number, since it uses less digits than its factorization.

79111009545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41528224.

The product of its (nonzero) digits is 56700, while the sum is 42.

The spelling of 79111009545 in words is "seventy-nine billion, one hundred eleven million, nine thousand, five hundred forty-five".