20004375535445 has 16 divisors (see below), whose sum is σ = 27434652567168. Its totient is φ = 13717245879360.

The previous prime is 20004375535409. The next prime is 20004375535457. The reversal of 20004375535445 is 54453557340002.

It is a happy number.

It is not a de Polignac number, because 20004375535445 - 2⁶ = 20004375535381 is a prime.

It is a super-2 number, since 2×20004375535445² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20004375535445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16099187 + ... + 17297183.

It is an arithmetic number, because the mean of its divisors is an integer number (1714665785448).

Almost surely, 2^{20004375535445} is an apocalyptic number.

It is an amenable number.

20004375535445 is a deficient number, since it is larger than the sum of its proper divisors (7430277031723).

20004375535445 is a wasteful number, since it uses less digits than its factorization.

20004375535445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675100.

The product of its (nonzero) digits is 5040000, while the sum is 47.

The spelling of 20004375535445 in words is "twenty trillion, four billion, three hundred seventy-five million, five hundred thirty-five thousand, four hundred forty-five".