157744020674 has 4 divisors (see below), whose sum is σ = 236616031014. Its totient is φ = 78872010336.

The previous prime is 157744020641. The next prime is 157744020677. The reversal of 157744020674 is 476020447751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476020447751 = 47 ⋅10128094633.

It can be written as a sum of positive squares in only one way, i.e., 146646873025 + 11097147649 = 382945^2 + 105343^2 .

It is not an unprimeable number, because it can be changed into a prime (157744020677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39436005167 + ... + 39436005170.

Almost surely, 2^157744020674 is an apocalyptic number.

157744020674 is a deficient number, since it is larger than the sum of its proper divisors (78872010340).

157744020674 is an equidigital number, since it uses as much as digits as its factorization.

157744020674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78872010339.

The product of its (nonzero) digits is 1317120, while the sum is 47.

The spelling of 157744020674 in words is "one hundred fifty-seven billion, seven hundred forty-four million, twenty thousand, six hundred seventy-four".