22001515555 has 16 divisors (see below), whose sum is σ = 26913246624. Its totient is φ = 17260588800.

The previous prime is 22001515507. The next prime is 22001515573. The reversal of 22001515555 is 55551510022.

It is not a de Polignac number, because 22001515555 - 2⁷ = 22001515427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546880 + ... + 585730.

It is an arithmetic number, because the mean of its divisors is an integer number (1682077914).

Almost surely, 2^22001515555 is an apocalyptic number.

22001515555 is a deficient number, since it is larger than the sum of its proper divisors (4911731069).

22001515555 is a wasteful number, since it uses less digits than its factorization.

22001515555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41046.

The product of its (nonzero) digits is 12500, while the sum is 31.

The spelling of 22001515555 in words is "twenty-two billion, one million, five hundred fifteen thousand, five hundred fifty-five".