157793771520 has 1792 divisors, whose sum is σ = 747379353600. Its totient is φ = 30576476160.

The previous prime is 157793771483. The next prime is 157793771521. The reversal of 157793771520 is 25177397751.

157793771520 is a `hidden beast` number, since 1 + 57 + 79 + 377 + 152 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1792).

It is a super-2 number, since 2×157793771520² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157793771521) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1447649226 + ... + 1447649334.

Almost surely, 2^157793771520 is an apocalyptic number.

157793771520 is a gapful number since it is divisible by the number (10) 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 157793771520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373689676800).

157793771520 is an abundant number, since it is smaller than the sum of its proper divisors (589585582080).

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

157793771520 is a wasteful number, since it uses less digits than its factorization.

157793771520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 3241350, while the sum is 54.

The spelling of 157793771520 in words is "one hundred fifty-seven billion, seven hundred ninety-three million, seven hundred seventy-one thousand, five hundred twenty".