21526341002 has 4 divisors (see below), whose sum is σ = 32289511506. Its totient is φ = 10763170500.

The previous prime is 21526340993. The next prime is 21526341017. The reversal of 21526341002 is 20014362512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14142204241 + 7384136761 = 118921^2 + 85931^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5381585249 + ... + 5381585252.

Almost surely, 2^21526341002 is an apocalyptic number.

21526341002 is a deficient number, since it is larger than the sum of its proper divisors (10763170504).

21526341002 is a wasteful number, since it uses less digits than its factorization.

21526341002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10763170503.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 21526341002 in words is "twenty-one billion, five hundred twenty-six million, three hundred forty-one thousand, two".