157844481408 has 128 divisors (see below), whose sum is σ = 481924908000. Its totient is φ = 50800490496.

The previous prime is 157844481371. The next prime is 157844481463. The reversal of 157844481408 is 804184448751.

157844481408 is a `hidden beast` number, since 1 + 57 + 8 + 4 + 448 + 140 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687235 + ... + 887682.

Almost surely, 2^157844481408 is an apocalyptic number.

157844481408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

157844481408 is an abundant number, since it is smaller than the sum of its proper divisors (324080426592).

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

157844481408 is a wasteful number, since it uses less digits than its factorization.

157844481408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574969 (or 1574951 counting only the distinct ones).

The product of its (nonzero) digits is 4587520, while the sum is 54.

The spelling of 157844481408 in words is "one hundred fifty-seven billion, eight hundred forty-four million, four hundred eighty-one thousand, four hundred eight".