157161665107672 has 32 divisors (see below), whose sum is σ = 296445958895520. Its totient is φ = 78109419870720.

The previous prime is 157161665107633. The next prime is 157161665107691. The reversal of 157161665107672 is 276701566161751.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 157161665107672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129142672 + ... + 130353952.

It is an arithmetic number, because the mean of its divisors is an integer number (9263936215485).

Almost surely, 2^{157161665107672} is an apocalyptic number.

It is an amenable number.

157161665107672 is a deficient number, since it is larger than the sum of its proper divisors (139284293787848).

157161665107672 is a wasteful number, since it uses less digits than its factorization.

157161665107672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308571 (or 1308567 counting only the distinct ones).

The product of its (nonzero) digits is 22226400, while the sum is 61.

The spelling of 157161665107672 in words is "one hundred fifty-seven trillion, one hundred sixty-one billion, six hundred sixty-five million, one hundred seven thousand, six hundred seventy-two".