21752624102 has 16 divisors (see below), whose sum is σ = 35700838992. Its totient is φ = 9858213120.

The previous prime is 21752624093. The next prime is 21752624149. The reversal of 21752624102 is 20142625712.

It is a super-2 number, since 2×21752624102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459583 + ... + 1474410.

It is an arithmetic number, because the mean of its divisors is an integer number (2231302437).

Almost surely, 2^21752624102 is an apocalyptic number.

21752624102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21752624102 is a deficient number, since it is larger than the sum of its proper divisors (13948214890).

21752624102 is a wasteful number, since it uses less digits than its factorization.

21752624102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934343.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 21752624102 in words is "twenty-one billion, seven hundred fifty-two million, six hundred twenty-four thousand, one hundred two".