157630400729 has 2 divisors, whose sum is σ = 157630400730. Its totient is φ = 157630400728.

The previous prime is 157630400677. The next prime is 157630400803. The reversal of 157630400729 is 927004036751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150972656704 + 6657744025 = 388552^2 + 81595^2 .

It is a cyclic number.

It is not a de Polignac number, because 157630400729 - 2¹² = 157630396633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157630400729.

It is not a weakly prime, because it can be changed into another prime (157630400029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78815200364 + 78815200365.

It is an arithmetic number, because the mean of its divisors is an integer number (78815200365).

Almost surely, 2^157630400729 is an apocalyptic number.

It is an amenable number.

157630400729 is a deficient number, since it is larger than the sum of its proper divisors (1).

157630400729 is an equidigital number, since it uses as much as digits as its factorization.

157630400729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 157630400729 in words is "one hundred fifty-seven billion, six hundred thirty million, four hundred thousand, seven hundred twenty-nine".