20261404104 has 16 divisors (see below), whose sum is σ = 50653510320. Its totient is φ = 6753801360.

The previous prime is 20261404081. The next prime is 20261404109. The reversal of 20261404104 is 40140416202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 844225171 = 20261404104 / (2 + 0 + 2 + 6 + 1 + 4 + 0 + 4 + 1 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (20261404109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422112562 + ... + 422112609.

It is an arithmetic number, because the mean of its divisors is an integer number (3165844395).

Almost surely, 2^20261404104 is an apocalyptic number.

20261404104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20261404104 is an abundant number, since it is smaller than the sum of its proper divisors (30392106216).

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

20261404104 is a wasteful number, since it uses less digits than its factorization.

20261404104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844225180 (or 844225176 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The spelling of 20261404104 in words is "twenty billion, two hundred sixty-one million, four hundred four thousand, one hundred four".