157212057601 has 2 divisors, whose sum is σ = 157212057602. Its totient is φ = 157212057600.

The previous prime is 157212057551. The next prime is 157212057617. The reversal of 157212057601 is 106750212751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133315535376 + 23896522225 = 365124^2 + 154585^2 .

It is a cyclic number.

It is not a de Polignac number, because 157212057601 - 2⁹ = 157212057089 is a prime.

It is not a weakly prime, because it can be changed into another prime (157212052601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78606028800 + 78606028801.

It is an arithmetic number, because the mean of its divisors is an integer number (78606028801).

Almost surely, 2^157212057601 is an apocalyptic number.

It is an amenable number.

157212057601 is a deficient number, since it is larger than the sum of its proper divisors (1).

157212057601 is an equidigital number, since it uses as much as digits as its factorization.

157212057601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 37.

The spelling of 157212057601 in words is "one hundred fifty-seven billion, two hundred twelve million, fifty-seven thousand, six hundred one".