157620843621796 has 9 divisors (see below), whose sum is σ = 275836520279649. Its totient is φ = 78810409256184.

The previous prime is 157620843621757. The next prime is 157620843621799. The reversal of 157620843621796 is 697126348026751.

The square root of 157620843621796 is 12554714.

It is a perfect power (a square), and thus also a powerful number.

157620843621796 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 107541670252900 + 50079173368896 = 10370230^2 + 7076664^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157620843621799) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21970750 + ... + 28248106.

It is a 1-persistent number, because it is pandigital, but 2⋅157620843621796 = 315241687243592 is not.

Almost surely, 2^{157620843621796} is an apocalyptic number.

157620843621796 is the 12554714-th square number.

It is an amenable number.

157620843621796 is a deficient number, since it is larger than the sum of its proper divisors (118215676657853).

157620843621796 is an frugal number, since it uses more digits than its factorization.

157620843621796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12554718 (or 6277359 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 67.

The spelling of 157620843621796 in words is "one hundred fifty-seven trillion, six hundred twenty billion, eight hundred forty-three million, six hundred twenty-one thousand, seven hundred ninety-six".