161215535054764 has 6 divisors (see below), whose sum is σ = 282127186345844. Its totient is φ = 80607767527380.

The previous prime is 161215535054747. The next prime is 161215535054813. The reversal of 161215535054764 is 467450535512161.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20151941881842 + ... + 20151941881849.

Almost surely, 2^{161215535054764} is an apocalyptic number.

It is an amenable number.

161215535054764 is a deficient number, since it is larger than the sum of its proper divisors (120911651291080).

161215535054764 is a wasteful number, since it uses less digits than its factorization.

161215535054764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40303883763695 (or 40303883763693 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 55.

The spelling of 161215535054764 in words is "one hundred sixty-one trillion, two hundred fifteen billion, five hundred thirty-five million, fifty-four thousand, seven hundred sixty-four".