157251738541 has 4 divisors (see below), whose sum is σ = 157336879392. Its totient is φ = 157166597692.

The previous prime is 157251738517. The next prime is 157251738557. The reversal of 157251738541 is 145837152751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157251738541 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157251738841) 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, 42567655 + ... + 42571348.

It is an arithmetic number, because the mean of its divisors is an integer number (39334219848).

Almost surely, 2^157251738541 is an apocalyptic number.

It is an amenable number.

157251738541 is a deficient number, since it is larger than the sum of its proper divisors (85140851).

157251738541 is an equidigital number, since it uses as much as digits as its factorization.

157251738541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85140850.

The product of its digits is 1176000, while the sum is 49.

The spelling of 157251738541 in words is "one hundred fifty-seven billion, two hundred fifty-one million, seven hundred thirty-eight thousand, five hundred forty-one".