157206420766656 has 84 divisors (see below), whose sum is σ = 451069803433392. Its totient is φ = 52347949645824.

The previous prime is 157206420766643. The next prime is 157206420766699. The reversal of 157206420766656 is 656667024602751.

It is a junction number, because it is equal to n+sod(n) for n = 157206420766593 and 157206420766602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140563905 + ... + 141677888.

Almost surely, 2^{157206420766656} is an apocalyptic number.

157206420766656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

157206420766656 is an abundant number, since it is smaller than the sum of its proper divisors (293863382666736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157206420766656 is a wasteful number, since it uses less digits than its factorization.

157206420766656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282242778 (or 282242765 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 63.

The spelling of 157206420766656 in words is "one hundred fifty-seven trillion, two hundred six billion, four hundred twenty million, seven hundred sixty-six thousand, six hundred fifty-six".