157909489620 has 24 divisors (see below), whose sum is σ = 442146571104. Its totient is φ = 42109197216.

The previous prime is 157909489607. The next prime is 157909489631. The reversal of 157909489620 is 26984909751.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 2631824827 = 157909489620 / (1 + 5 + 7 + 9 + 0 + 9 + 4 + 8 + 9 + 6 + 2 + 0).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1315912354 + ... + 1315912473.

It is an arithmetic number, because the mean of its divisors is an integer number (18422773796).

Almost surely, 2^157909489620 is an apocalyptic number.

157909489620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157909489620 is an abundant number, since it is smaller than the sum of its proper divisors (284237081484).

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

157909489620 is a wasteful number, since it uses less digits than its factorization.

157909489620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631824839 (or 2631824837 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 157909489620 in words is "one hundred fifty-seven billion, nine hundred nine million, four hundred eighty-nine thousand, six hundred twenty".