21526341001 has 12 divisors (see below), whose sum is σ = 24945911280. Its totient is φ = 18418256960.

The previous prime is 21526340993. The next prime is 21526341017. The reversal of 21526341001 is 10014362512.

It is a happy number.

It is not a de Polignac number, because 21526341001 - 2³ = 21526340993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21526341701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3382531 + ... + 3388888.

It is an arithmetic number, because the mean of its divisors is an integer number (2078825940).

Almost surely, 2^21526341001 is an apocalyptic number.

It is an amenable number.

21526341001 is a deficient number, since it is larger than the sum of its proper divisors (3419570279).

21526341001 is a wasteful number, since it uses less digits than its factorization.

21526341001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771464 (or 6771447 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 21526341001 in words is "twenty-one billion, five hundred twenty-six million, three hundred forty-one thousand, one".