157777676757 has 12 divisors (see below), whose sum is σ = 227905652364. Its totient is φ = 105183011520.

The previous prime is 157777676737. The next prime is 157777676759. The reversal of 157777676757 is 757676777751.

It can be written as a sum of positive squares in 2 ways, for example, as 20789602596 + 136988074161 = 144186^2 + 370119^2 .

It is not a de Polignac number, because 157777676757 - 2¹¹ = 157777674709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157777676759) 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 in 11 ways as a sum of consecutive naturals, for example, 397257 + ... + 688017.

It is an arithmetic number, because the mean of its divisors is an integer number (18992137697).

Almost surely, 2^157777676757 is an apocalyptic number.

It is an amenable number.

157777676757 is a deficient number, since it is larger than the sum of its proper divisors (70127975607).

157777676757 is a wasteful number, since it uses less digits than its factorization.

157777676757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351060 (or 351057 counting only the distinct ones).

The product of its digits is 741188700, while the sum is 72.

The spelling of 157777676757 in words is "one hundred fifty-seven billion, seven hundred seventy-seven million, six hundred seventy-six thousand, seven hundred fifty-seven".