161240756193 has 48 divisors (see below), whose sum is σ = 262644782400. Its totient is φ = 97692091200.

The previous prime is 161240756147. The next prime is 161240756219. The reversal of 161240756193 is 391657042161.

161240756193 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 407 + 56 + 193 = 666.

It is not a de Polignac number, because 161240756193 - 2²⁰ = 161239707617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161240758193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16104573 + ... + 16114581.

It is an arithmetic number, because the mean of its divisors is an integer number (5471766300).

Almost surely, 2^161240756193 is an apocalyptic number.

It is an amenable number.

161240756193 is a deficient number, since it is larger than the sum of its proper divisors (101404026207).

161240756193 is a wasteful number, since it uses less digits than its factorization.

161240756193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14971 (or 14954 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 161240756193 in words is "one hundred sixty-one billion, two hundred forty million, seven hundred fifty-six thousand, one hundred ninety-three".