157171744573 has 4 divisors (see below), whose sum is σ = 157310958940. Its totient is φ = 157032530208.

The previous prime is 157171744517. The next prime is 157171744579. The reversal of 157171744573 is 375447171751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3960562489 + 153211182084 = 62933^2 + 391422^2 .

It is a cyclic number.

It is not a de Polignac number, because 157171744573 - 2²⁵ = 157138190141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157171744573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157171744579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69605490 + ... + 69607747.

It is an arithmetic number, because the mean of its divisors is an integer number (39327739735).

Almost surely, 2^157171744573 is an apocalyptic number.

It is an amenable number.

157171744573 is a deficient number, since it is larger than the sum of its proper divisors (139214367).

157171744573 is a wasteful number, since it uses less digits than its factorization.

157171744573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139214366.

The product of its digits is 2881200, while the sum is 52.

The spelling of 157171744573 in words is "one hundred fifty-seven billion, one hundred seventy-one million, seven hundred forty-four thousand, five hundred seventy-three".