161696976826 has 16 divisors (see below), whose sum is σ = 302394346560. Its totient is φ = 62998822080.

The previous prime is 161696976821. The next prime is 161696976829. The reversal of 161696976826 is 628679696161.

It is a super-2 number, since 2×161696976826² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161696976821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524990031 + ... + 524990338.

It is an arithmetic number, because the mean of its divisors is an integer number (18899646660).

Almost surely, 2^161696976826 is an apocalyptic number.

161696976826 is a deficient number, since it is larger than the sum of its proper divisors (140697369734).

161696976826 is a wasteful number, since it uses less digits than its factorization.

161696976826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049980389.

The product of its digits is 70543872, while the sum is 67.

The spelling of 161696976826 in words is "one hundred sixty-one billion, six hundred ninety-six million, nine hundred seventy-six thousand, eight hundred twenty-six".