21632210402 has 16 divisors (see below), whose sum is σ = 35656548192. Its totient is φ = 9761049120.

The previous prime is 21632210399. The next prime is 21632210549. The reversal of 21632210402 is 20401223612.

It is a happy number.

It is a super-3 number, since 3×21632210402³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3585608 + ... + 3591635.

It is an arithmetic number, because the mean of its divisors is an integer number (2228534262).

Almost surely, 2^21632210402 is an apocalyptic number.

21632210402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21632210402 is a deficient number, since it is larger than the sum of its proper divisors (14024337790).

21632210402 is a wasteful number, since it uses less digits than its factorization.

21632210402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7177393.

The product of its (nonzero) digits is 1152, while the sum is 23.

The spelling of 21632210402 in words is "twenty-one billion, six hundred thirty-two million, two hundred ten thousand, four hundred two".