157376823781 has 2 divisors, whose sum is σ = 157376823782. Its totient is φ = 157376823780.

The previous prime is 157376823763. The next prime is 157376823829. The reversal of 157376823781 is 187328673751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116253039681 + 41123784100 = 340959^2 + 202790^2 .

It is a cyclic number.

It is not a de Polignac number, because 157376823781 - 2¹¹ = 157376821733 is a prime.

It is a super-2 number, since 2×157376823781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157376827781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78688411890 + 78688411891.

It is an arithmetic number, because the mean of its divisors is an integer number (78688411891).

Almost surely, 2^157376823781 is an apocalyptic number.

It is an amenable number.

157376823781 is a deficient number, since it is larger than the sum of its proper divisors (1).

157376823781 is an equidigital number, since it uses as much as digits as its factorization.

157376823781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11854080, while the sum is 58.

The spelling of 157376823781 in words is "one hundred fifty-seven billion, three hundred seventy-six million, eight hundred twenty-three thousand, seven hundred eighty-one".