20130401099988 has 36 divisors (see below), whose sum is σ = 50916727624308. Its totient is φ = 6705973647360.

The previous prime is 20130401099983. The next prime is 20130401099993. The reversal of 20130401099988 is 88999010403102.

20130401099988 is a `hidden beast` number, since 20 + 130 + 401 + 0 + 9 + 9 + 9 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (20130401099983) and next prime (20130401099993).

It can be written as a sum of positive squares in 2 ways, for example, as 7117946530704 + 13012454569284 = 2667948^2 + 3607278^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130401099981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173276653 + ... + 173392788.

Almost surely, 2^{20130401099988} is an apocalyptic number.

It is an amenable number.

20130401099988 is an abundant number, since it is smaller than the sum of its proper divisors (30786326524320).

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

20130401099988 is a wasteful number, since it uses less digits than its factorization.

20130401099988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346671064 (or 346671059 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 20130401099988 in words is "twenty trillion, one hundred thirty billion, four hundred one million, ninety-nine thousand, nine hundred eighty-eight".