16061515555 has 32 divisors (see below), whose sum is σ = 20547491328. Its totient is φ = 12031027200.

The previous prime is 16061515511. The next prime is 16061515573. The reversal of 16061515555 is 55551516061.

It is a de Polignac number, because none of the positive numbers 2^k-16061515555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1030299 + ... + 1045771.

It is an arithmetic number, because the mean of its divisors is an integer number (642109104).

Almost surely, 2^16061515555 is an apocalyptic number.

16061515555 is a deficient number, since it is larger than the sum of its proper divisors (4485975773).

16061515555 is a wasteful number, since it uses less digits than its factorization.

16061515555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15727.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 16061515555 in words is "sixteen billion, sixty-one million, five hundred fifteen thousand, five hundred fifty-five".