21425877246616 has 32 divisors (see below), whose sum is σ = 41517716659200. Its totient is φ = 10355290751520.

The previous prime is 21425877246593. The next prime is 21425877246617. The reversal of 21425877246616 is 61664277852412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21425877246617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50074900 + ... + 50500963.

It is an arithmetic number, because the mean of its divisors is an integer number (1297428645600).

Almost surely, 2^{21425877246616} is an apocalyptic number.

It is an amenable number.

21425877246616 is a deficient number, since it is larger than the sum of its proper divisors (20091839412584).

21425877246616 is a wasteful number, since it uses less digits than its factorization.

21425877246616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100576759 (or 100576755 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 61.

The spelling of 21425877246616 in words is "twenty-one trillion, four hundred twenty-five billion, eight hundred seventy-seven million, two hundred forty-six thousand, six hundred sixteen".