20383385454574 has 16 divisors (see below), whose sum is σ = 30873920605488. Its totient is φ = 10092159413632.

The previous prime is 20383385454557. The next prime is 20383385454647. The reversal of 20383385454574 is 47545458338302.

It is a happy number.

It is a congruent number.

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, 19701259 + ... + 20710054.

It is an arithmetic number, because the mean of its divisors is an integer number (1929620037843).

Almost surely, 2^{20383385454574} is an apocalyptic number.

20383385454574 is a deficient number, since it is larger than the sum of its proper divisors (10490535150914).

20383385454574 is a wasteful number, since it uses less digits than its factorization.

20383385454574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40413779.

The product of its (nonzero) digits is 193536000, while the sum is 61.

The spelling of 20383385454574 in words is "twenty trillion, three hundred eighty-three billion, three hundred eighty-five million, four hundred fifty-four thousand, five hundred seventy-four".