157745381647 has 12 divisors (see below), whose sum is σ = 186013428816. Its totient is φ = 133358127840.

The previous prime is 157745381623. The next prime is 157745381681. The reversal of 157745381647 is 746183547751.

It is not a de Polignac number, because 157745381647 - 2¹⁹ = 157744857359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157745381591 and 157745381600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157745381617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22046379 + ... + 22053532.

It is an arithmetic number, because the mean of its divisors is an integer number (15501119068).

Almost surely, 2^157745381647 is an apocalyptic number.

157745381647 is a deficient number, since it is larger than the sum of its proper divisors (28268047169).

157745381647 is an equidigital number, since it uses as much as digits as its factorization.

157745381647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44099998 (or 44099991 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 58.

The spelling of 157745381647 in words is "one hundred fifty-seven billion, seven hundred forty-five million, three hundred eighty-one thousand, six hundred forty-seven".