20346045880 has 64 divisors (see below), whose sum is σ = 48210746400. Its totient is φ = 7706442240.

The previous prime is 20346045877. The next prime is 20346045887. The reversal of 20346045880 is 8854064302.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346045887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2041710 + ... + 2051650.

Almost surely, 2^20346045880 is an apocalyptic number.

20346045880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20346045880 is an abundant number, since it is smaller than the sum of its proper divisors (27864700520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20346045880 is a wasteful number, since it uses less digits than its factorization.

20346045880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12664 (or 12660 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 20346045880 in words is "twenty billion, three hundred forty-six million, forty-five thousand, eight hundred eighty".