20345023253402 has 16 divisors (see below), whose sum is σ = 30562778898432. Its totient is φ = 10157434374000.

The previous prime is 20345023253383. The next prime is 20345023253419. The reversal of 20345023253402 is 20435232054302.

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, 8974823 + ... + 11010789.

It is an arithmetic number, because the mean of its divisors is an integer number (1910173681152).

Almost surely, 2^{20345023253402} is an apocalyptic number.

20345023253402 is a deficient number, since it is larger than the sum of its proper divisors (10217755645030).

20345023253402 is a wasteful number, since it uses less digits than its factorization.

20345023253402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043373.

The product of its (nonzero) digits is 172800, while the sum is 35.

The spelling of 20345023253402 in words is "twenty trillion, three hundred forty-five billion, twenty-three million, two hundred fifty-three thousand, four hundred two".