2615145443421 has 16 divisors (see below), whose sum is σ = 4060171903104. Its totient is φ = 1466173185984.

The previous prime is 2615145443413. The next prime is 2615145443459. The reversal of 2615145443421 is 1243445415162.

It is not a de Polignac number, because 2615145443421 - 2³ = 2615145443413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2615145443921) 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, 1174817146 + ... + 1174819371.

It is an arithmetic number, because the mean of its divisors is an integer number (253760743944).

Almost surely, 2^{2615145443421} is an apocalyptic number.

2615145443421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2615145443421 is a deficient number, since it is larger than the sum of its proper divisors (1445026459683).

2615145443421 is a wasteful number, since it uses less digits than its factorization.

2615145443421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349636580.

The product of its digits is 460800, while the sum is 42.

The spelling of 2615145443421 in words is "two trillion, six hundred fifteen billion, one hundred forty-five million, four hundred forty-three thousand, four hundred twenty-one".