157061110621 has 2 divisors, whose sum is σ = 157061110622. Its totient is φ = 157061110620.

The previous prime is 157061110607. The next prime is 157061110729. The reversal of 157061110621 is 126011160751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155878094596 + 1183016025 = 394814^2 + 34395^2 .

It is a cyclic number.

It is not a de Polignac number, because 157061110621 - 2⁵ = 157061110589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157061113621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78530555310 + 78530555311.

It is an arithmetic number, because the mean of its divisors is an integer number (78530555311).

Almost surely, 2^157061110621 is an apocalyptic number.

It is an amenable number.

157061110621 is a deficient number, since it is larger than the sum of its proper divisors (1).

157061110621 is an equidigital number, since it uses as much as digits as its factorization.

157061110621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 31.

The spelling of 157061110621 in words is "one hundred fifty-seven billion, sixty-one million, one hundred ten thousand, six hundred twenty-one".