20015453355 has 8 divisors (see below), whose sum is σ = 32024725392. Its totient is φ = 10674908448.

The previous prime is 20015453317. The next prime is 20015453399. The reversal of 20015453355 is 55335451002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20015453355 - 2⁶ = 20015453291 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667181764 + ... + 667181793.

It is an arithmetic number, because the mean of its divisors is an integer number (4003090674).

Almost surely, 2^20015453355 is an apocalyptic number.

20015453355 is a deficient number, since it is larger than the sum of its proper divisors (12009272037).

20015453355 is a wasteful number, since it uses less digits than its factorization.

20015453355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334363565.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 20015453355 in words is "twenty billion, fifteen million, four hundred fifty-three thousand, three hundred fifty-five".