157556146457 has 2 divisors, whose sum is σ = 157556146458. Its totient is φ = 157556146456.

The previous prime is 157556146417. The next prime is 157556146471. The reversal of 157556146457 is 754641655751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137406627856 + 20149518601 = 370684^2 + 141949^2 .

It is a cyclic number.

It is not a de Polignac number, because 157556146457 - 2¹² = 157556142361 is a prime.

It is not a weakly prime, because it can be changed into another prime (157556146417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78778073228 + 78778073229.

It is an arithmetic number, because the mean of its divisors is an integer number (78778073229).

Almost surely, 2^157556146457 is an apocalyptic number.

It is an amenable number.

157556146457 is a deficient number, since it is larger than the sum of its proper divisors (1).

157556146457 is an equidigital number, since it uses as much as digits as its factorization.

157556146457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640000, while the sum is 56.

The spelling of 157556146457 in words is "one hundred fifty-seven billion, five hundred fifty-six million, one hundred forty-six thousand, four hundred fifty-seven".