157250461037821 has 2 divisors, whose sum is σ = 157250461037822. Its totient is φ = 157250461037820.

The previous prime is 157250461037777. The next prime is 157250461037827. The reversal of 157250461037821 is 128730164052751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111271063220100 + 45979397817721 = 10548510^2 + 6780811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157250461037821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157250461037827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78625230518910 + 78625230518911.

It is an arithmetic number, because the mean of its divisors is an integer number (78625230518911).

Almost surely, 2^{157250461037821} is an apocalyptic number.

It is an amenable number.

157250461037821 is a deficient number, since it is larger than the sum of its proper divisors (1).

157250461037821 is an equidigital number, since it uses as much as digits as its factorization.

157250461037821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 157250461037821 in words is "one hundred fifty-seven trillion, two hundred fifty billion, four hundred sixty-one million, thirty-seven thousand, eight hundred twenty-one".