157191063408 has 120 divisors (see below), whose sum is σ = 447915639600. Its totient is φ = 51446449152.

The previous prime is 157191063401. The next prime is 157191063409. The reversal of 157191063408 is 804360191751.

157191063408 is a `hidden beast` number, since 1 + 5 + 7 + 1 + 9 + 1 + 0 + 634 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157191063401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7270278 + ... + 7291866.

It is an arithmetic number, because the mean of its divisors is an integer number (3732630330).

Almost surely, 2^157191063408 is an apocalyptic number.

157191063408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157191063408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223957819800).

157191063408 is an abundant number, since it is smaller than the sum of its proper divisors (290724576192).

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

157191063408 is a wasteful number, since it uses less digits than its factorization.

157191063408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22519 (or 22510 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 157191063408 in words is "one hundred fifty-seven billion, one hundred ninety-one million, sixty-three thousand, four hundred eight".