2015411205421 has 16 divisors (see below), whose sum is σ = 2109474926080. Its totient is φ = 1923177116160.

The previous prime is 2015411205413. The next prime is 2015411205433. The reversal of 2015411205421 is 1245021145102.

It is a cyclic number.

It is not a de Polignac number, because 2015411205421 - 2³ = 2015411205413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2015411205421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015411205121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8686306 + ... + 8915308.

It is an arithmetic number, because the mean of its divisors is an integer number (131842182880).

Almost surely, 2^{2015411205421} is an apocalyptic number.

It is an amenable number.

2015411205421 is a deficient number, since it is larger than the sum of its proper divisors (94063720659).

2015411205421 is a wasteful number, since it uses less digits than its factorization.

2015411205421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232996.

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 2015411205421 in words is "two trillion, fifteen billion, four hundred eleven million, two hundred five thousand, four hundred twenty-one".