20873575351523 has 8 divisors (see below), whose sum is σ = 22431304856592. Its totient is φ = 19352498305536.

The previous prime is 20873575351511. The next prime is 20873575351561. The reversal of 20873575351523 is 32515357537802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20873575351523 - 2¹⁴ = 20873575335139 is a prime.

It is a super-2 number, since 2×20873575351523² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20873575341523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9163113590 + ... + 9163115867.

It is an arithmetic number, because the mean of its divisors is an integer number (2803913107074).

Almost surely, 2^{20873575351523} is an apocalyptic number.

20873575351523 is a deficient number, since it is larger than the sum of its proper divisors (1557729505069).

20873575351523 is a wasteful number, since it uses less digits than its factorization.

20873575351523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18326229541.

The product of its (nonzero) digits is 26460000, while the sum is 56.

The spelling of 20873575351523 in words is "twenty trillion, eight hundred seventy-three billion, five hundred seventy-five million, three hundred fifty-one thousand, five hundred twenty-three".