157221585104377 has 2 divisors, whose sum is σ = 157221585104378. Its totient is φ = 157221585104376.

The previous prime is 157221585104371. The next prime is 157221585104417. The reversal of 157221585104377 is 773401585122751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120799201375161 + 36422383729216 = 10990869^2 + 6035096^2 .

It is a cyclic number.

It is not a de Polignac number, because 157221585104377 - 2²³ = 157221576715769 is a prime.

It is not a weakly prime, because it can be changed into another prime (157221585104371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78610792552188 + 78610792552189.

It is an arithmetic number, because the mean of its divisors is an integer number (78610792552189).

Almost surely, 2^{157221585104377} is an apocalyptic number.

It is an amenable number.

157221585104377 is a deficient number, since it is larger than the sum of its proper divisors (1).

157221585104377 is an equidigital number, since it uses as much as digits as its factorization.

157221585104377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464000, while the sum is 58.

The spelling of 157221585104377 in words is "one hundred fifty-seven trillion, two hundred twenty-one billion, five hundred eighty-five million, one hundred four thousand, three hundred seventy-seven".