21410867375 has 16 divisors (see below), whose sum is σ = 26745925440. Its totient is φ = 17112564000.

The previous prime is 21410867339. The next prime is 21410867377. The reversal of 21410867375 is 57376801412.

It is a de Polignac number, because none of the positive numbers 2^k-21410867375 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410867377) 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, 53510 + ... + 213740.

It is an arithmetic number, because the mean of its divisors is an integer number (1671620340).

Almost surely, 2^21410867375 is an apocalyptic number.

21410867375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21410867375 is a deficient number, since it is larger than the sum of its proper divisors (5335058065).

21410867375 is a wasteful number, since it uses less digits than its factorization.

21410867375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161315 (or 161305 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 21410867375 in words is "twenty-one billion, four hundred ten million, eight hundred sixty-seven thousand, three hundred seventy-five".