21083473312690 has 32 divisors (see below), whose sum is σ = 38165220360000. Its totient is φ = 8385625869888.

The previous prime is 21083473312667. The next prime is 21083473312691. The reversal of 21083473312690 is 9621337438012.

It is a super-2 number, since 2×21083473312690² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21083473312691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22997616 + ... + 23896804.

It is an arithmetic number, because the mean of its divisors is an integer number (1192663136250).

Almost surely, 2^{21083473312690} is an apocalyptic number.

21083473312690 is a deficient number, since it is larger than the sum of its proper divisors (17081747047310).

21083473312690 is a wasteful number, since it uses less digits than its factorization.

21083473312690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912474.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 21083473312690 in words is "twenty-one trillion, eighty-three billion, four hundred seventy-three million, three hundred twelve thousand, six hundred ninety".