20010540400 has 60 divisors (see below), whose sum is σ = 48100548600. Its totient is φ = 8000016640.

The previous prime is 20010540383. The next prime is 20010540449. The reversal of 20010540400 is 404501002.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 815511 + ... + 839689.

It is an arithmetic number, because the mean of its divisors is an integer number (801675810).

Almost surely, 2^20010540400 is an apocalyptic number.

20010540400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010540400 is an abundant number, since it is smaller than the sum of its proper divisors (28090008200).

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

20010540400 is a wasteful number, since it uses less digits than its factorization.

20010540400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26266 (or 26255 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The spelling of 20010540400 in words is "twenty billion, ten million, five hundred forty thousand, four hundred".