157732605720 has 160 divisors (see below), whose sum is σ = 536545159920. Its totient is φ = 41555185920.

The previous prime is 157732605697. The next prime is 157732605721. The reversal of 157732605720 is 27506237751.

157732605720 is a `hidden beast` number, since 1 + 5 + 7 + 7 + 32 + 605 + 7 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157732605721) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 24351 + ... + 562190.

Almost surely, 2^157732605720 is an apocalyptic number.

157732605720 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 157732605720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268272579960).

157732605720 is an abundant number, since it is smaller than the sum of its proper divisors (378812554200).

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

157732605720 is a wasteful number, since it uses less digits than its factorization.

157732605720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586647 (or 586634 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 157732605720 in words is "one hundred fifty-seven billion, seven hundred thirty-two million, six hundred five thousand, seven hundred twenty".