157731144052 has 6 divisors (see below), whose sum is σ = 276029502098. Its totient is φ = 78865572024.

The previous prime is 157731144049. The next prime is 157731144061. The reversal of 157731144052 is 250441137751.

It can be written as a sum of positive squares in only one way, i.e., 118967047056 + 38764096996 = 344916^2 + 196886^2 .

It is a super-2 number, since 2×157731144052² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157731143996 and 157731144014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19716393003 + ... + 19716393010.

Almost surely, 2^157731144052 is an apocalyptic number.

It is an amenable number.

157731144052 is a deficient number, since it is larger than the sum of its proper divisors (118298358046).

157731144052 is a wasteful number, since it uses less digits than its factorization.

157731144052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39432786017 (or 39432786015 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 157731144052 in words is "one hundred fifty-seven billion, seven hundred thirty-one million, one hundred forty-four thousand, fifty-two".