157681646851 has 2 divisors, whose sum is σ = 157681646852. Its totient is φ = 157681646850.

The previous prime is 157681646831. The next prime is 157681646897. The reversal of 157681646851 is 158646186751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157681646851 - 2⁵ = 157681646819 is a prime.

It is not a weakly prime, because it can be changed into another prime (157681646831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78840823425 + 78840823426.

It is an arithmetic number, because the mean of its divisors is an integer number (78840823426).

Almost surely, 2^157681646851 is an apocalyptic number.

157681646851 is a deficient number, since it is larger than the sum of its proper divisors (1).

157681646851 is an equidigital number, since it uses as much as digits as its factorization.

157681646851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9676800, while the sum is 58.

The spelling of 157681646851 in words is "one hundred fifty-seven billion, six hundred eighty-one million, six hundred forty-six thousand, eight hundred fifty-one".