21875948735 has 16 divisors (see below), whose sum is σ = 26434985472. Its totient is φ = 17378407200.

The previous prime is 21875948723. The next prime is 21875948747. The reversal of 21875948735 is 53784957812.

It is an interprime number because it is at equal distance from previous prime (21875948723) and next prime (21875948747).

It is not a de Polignac number, because 21875948735 - 2⁴ = 21875948719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 848180 + ... + 873590.

It is an arithmetic number, because the mean of its divisors is an integer number (1652186592).

Almost surely, 2^21875948735 is an apocalyptic number.

21875948735 is a deficient number, since it is larger than the sum of its proper divisors (4559036737).

21875948735 is a wasteful number, since it uses less digits than its factorization.

21875948735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26614.

The product of its digits is 16934400, while the sum is 59.

The spelling of 21875948735 in words is "twenty-one billion, eight hundred seventy-five million, nine hundred forty-eight thousand, seven hundred thirty-five".