20889945464703 has 24 divisors (see below), whose sum is σ = 32400928165680. Its totient is φ = 11937039327360.

The previous prime is 20889945464699. The next prime is 20889945464777. The reversal of 20889945464703 is 30746454998802.

It is not a de Polignac number, because 20889945464703 - 2² = 20889945464699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20889945463703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32362773 + ... + 33001953.

It is an arithmetic number, because the mean of its divisors is an integer number (1350038673570).

Almost surely, 2^{20889945464703} is an apocalyptic number.

20889945464703 is a deficient number, since it is larger than the sum of its proper divisors (11510982700977).

20889945464703 is a wasteful number, since it uses less digits than its factorization.

20889945464703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861527 (or 861520 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 69.

The spelling of 20889945464703 in words is "twenty trillion, eight hundred eighty-nine billion, nine hundred forty-five million, four hundred sixty-four thousand, seven hundred three".