12376779534 has 32 divisors (see below), whose sum is σ = 31433091840. Its totient is φ = 3536222616.

The previous prime is 12376779521. The next prime is 12376779617. The reversal of 12376779534 is 43597767321.

12376779534 is a `hidden beast` number, since 1 + 2 + 37 + 6 + 7 + 79 + 534 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

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, 16371024 + ... + 16371779.

It is an arithmetic number, because the mean of its divisors is an integer number (982284120).

Almost surely, 2^12376779534 is an apocalyptic number.

12376779534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12376779534 is an abundant number, since it is smaller than the sum of its proper divisors (19056312306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12376779534 is a wasteful number, since it uses less digits than its factorization.

12376779534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32742821 (or 32742815 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 54.

The spelling of 12376779534 in words is "twelve billion, three hundred seventy-six million, seven hundred seventy-nine thousand, five hundred thirty-four".