2015534055021 has 8 divisors (see below), whose sum is σ = 2687389710720. Its totient is φ = 1343683884672.

The previous prime is 2015534055013. The next prime is 2015534055049. The reversal of 2015534055021 is 1205504355102.

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

It is not a de Polignac number, because 2015534055021 - 2³ = 2015534055013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015534055071) 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, 419620 + ... + 2051133.

It is an arithmetic number, because the mean of its divisors is an integer number (335923713840).

Almost surely, 2^{2015534055021} is an apocalyptic number.

It is an amenable number.

2015534055021 is a deficient number, since it is larger than the sum of its proper divisors (671855655699).

2015534055021 is a wasteful number, since it uses less digits than its factorization.

2015534055021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742675.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 2015534055021 in words is "two trillion, fifteen billion, five hundred thirty-four million, fifty-five thousand, twenty-one".