157620575780 has 12 divisors (see below), whose sum is σ = 331003209180. Its totient is φ = 63048230304.

The previous prime is 157620575779. The next prime is 157620575851. The reversal of 157620575780 is 87575026751.

It can be written as a sum of positive squares in 2 ways, for example, as 39324476416 + 118296099364 = 198304^2 + 343942^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3940514375 + ... + 3940514414.

It is an arithmetic number, because the mean of its divisors is an integer number (27583600765).

Almost surely, 2^157620575780 is an apocalyptic number.

157620575780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157620575780 is an abundant number, since it is smaller than the sum of its proper divisors (173382633400).

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

157620575780 is a wasteful number, since it uses less digits than its factorization.

157620575780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7881028798 (or 7881028796 counting only the distinct ones).

The product of its (nonzero) digits is 4116000, while the sum is 53.

The spelling of 157620575780 in words is "one hundred fifty-seven billion, six hundred twenty million, five hundred seventy-five thousand, seven hundred eighty".