21346044125 has 32 divisors (see below), whose sum is σ = 31769307648. Its totient is φ = 14000870400.

The previous prime is 21346044119. The next prime is 21346044179. The reversal of 21346044125 is 52144064312.

It is not a de Polignac number, because 21346044125 - 2¹⁸ = 21345781981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21346044091 and 21346044100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 510212 + ... + 550461.

It is an arithmetic number, because the mean of its divisors is an integer number (992790864).

Almost surely, 2^21346044125 is an apocalyptic number.

21346044125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21346044125 is a deficient number, since it is larger than the sum of its proper divisors (10423263523).

21346044125 is a wasteful number, since it uses less digits than its factorization.

21346044125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060718 (or 1060708 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 21346044125 in words is "twenty-one billion, three hundred forty-six million, forty-four thousand, one hundred twenty-five".