20352472733723 has 4 divisors (see below), whose sum is σ = 21918047559408. Its totient is φ = 18786897908040.

The previous prime is 20352472733699. The next prime is 20352472733783. The reversal of 20352472733723 is 32733727425302.

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

It is a cyclic number.

It is not a de Polignac number, because 20352472733723 - 2⁴⁰ = 19252961105947 is a prime.

It is a super-2 number, since 2×20352472733723² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20352472733783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782787412823 + ... + 782787412848.

It is an arithmetic number, because the mean of its divisors is an integer number (5479511889852).

Almost surely, 2^{20352472733723} is an apocalyptic number.

20352472733723 is a deficient number, since it is larger than the sum of its proper divisors (1565574825685).

20352472733723 is a wasteful number, since it uses less digits than its factorization.

20352472733723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565574825684.

The product of its (nonzero) digits is 8890560, while the sum is 50.

The spelling of 20352472733723 in words is "twenty trillion, three hundred fifty-two billion, four hundred seventy-two million, seven hundred thirty-three thousand, seven hundred twenty-three".