157245881811973 has 2 divisors, whose sum is σ = 157245881811974. Its totient is φ = 157245881811972.

The previous prime is 157245881811971. The next prime is 157245881812043. The reversal of 157245881811973 is 379118188542751.

It is an a-pointer prime, because the next prime (157245881812043) can be obtained adding 157245881811973 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150890808872644 + 6355072939329 = 12283762^2 + 2520927^2 .

It is a cyclic number.

It is not a de Polignac number, because 157245881811973 - 2¹ = 157245881811971 is a prime.

It is a super-2 number, since 2×157245881811973² (a number of 29 digits) contains 22 as substring.

Together with 157245881811971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157245881811971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78622940905986 + 78622940905987.

It is an arithmetic number, because the mean of its divisors is an integer number (78622940905987).

Almost surely, 2^{157245881811973} is an apocalyptic number.

It is an amenable number.

157245881811973 is a deficient number, since it is larger than the sum of its proper divisors (1).

157245881811973 is an equidigital number, since it uses as much as digits as its factorization.

157245881811973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 135475200, while the sum is 70.

The spelling of 157245881811973 in words is "one hundred fifty-seven trillion, two hundred forty-five billion, eight hundred eighty-one million, eight hundred eleven thousand, nine hundred seventy-three".