161526771464 has 16 divisors (see below), whose sum is σ = 320678149500. Its totient is φ = 76012598272.

The previous prime is 161526771463. The next prime is 161526771467. The reversal of 161526771464 is 464177625161.

It can be written as a sum of positive squares in 2 ways, for example, as 160754487364 + 772284100 = 400942^2 + 27790^2 .

It is not an unprimeable number, because it can be changed into a prime (161526771463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593848289 + ... + 593848560.

Almost surely, 2^161526771464 is an apocalyptic number.

It is an amenable number.

161526771464 is a deficient number, since it is larger than the sum of its proper divisors (159151378036).

161526771464 is a wasteful number, since it uses less digits than its factorization.

161526771464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187696872 (or 1187696868 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The spelling of 161526771464 in words is "one hundred sixty-one billion, five hundred twenty-six million, seven hundred seventy-one thousand, four hundred sixty-four".