79771424507 has 2 divisors, whose sum is σ = 79771424508. Its totient is φ = 79771424506.

The previous prime is 79771424489. The next prime is 79771424519. The reversal of 79771424507 is 70542417797.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79771424507 - 2¹² = 79771420411 is a prime.

It is not a weakly prime, because it can be changed into another prime (79771424527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39885712253 + 39885712254.

It is an arithmetic number, because the mean of its divisors is an integer number (39885712254).

Almost surely, 2^79771424507 is an apocalyptic number.

79771424507 is a deficient number, since it is larger than the sum of its proper divisors (1).

79771424507 is an equidigital number, since it uses as much as digits as its factorization.

79771424507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3457440, while the sum is 53.

The spelling of 79771424507 in words is "seventy-nine billion, seven hundred seventy-one million, four hundred twenty-four thousand, five hundred seven".