157620534979 has 2 divisors, whose sum is σ = 157620534980. Its totient is φ = 157620534978.

The previous prime is 157620534949. The next prime is 157620535069. The reversal of 157620534979 is 979435026751.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157620534979 - 2⁵ = 157620534947 is a prime.

It is not a weakly prime, because it can be changed into another prime (157620534949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78810267489 + 78810267490.

It is an arithmetic number, because the mean of its divisors is an integer number (78810267490).

Almost surely, 2^157620534979 is an apocalyptic number.

157620534979 is a deficient number, since it is larger than the sum of its proper divisors (1).

157620534979 is an equidigital number, since it uses as much as digits as its factorization.

157620534979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14288400, while the sum is 58.

The spelling of 157620534979 in words is "one hundred fifty-seven billion, six hundred twenty million, five hundred thirty-four thousand, nine hundred seventy-nine".