78736088506 has 16 divisors (see below), whose sum is σ = 125597523240. Its totient is φ = 36890472960.

The previous prime is 78736088491. The next prime is 78736088537. The reversal of 78736088506 is 60588063787.

It can be written as a sum of positive squares in 4 ways, for example, as 66545941225 + 12190147281 = 257965^2 + 110409^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5048475 + ... + 5064046.

Almost surely, 2^78736088506 is an apocalyptic number.

78736088506 is a deficient number, since it is larger than the sum of its proper divisors (46861434734).

78736088506 is a wasteful number, since it uses less digits than its factorization.

78736088506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112769.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 78736088506 in words is "seventy-eight billion, seven hundred thirty-six million, eighty-eight thousand, five hundred six".