20747736202140 has 36 divisors (see below), whose sum is σ = 62934799813704. Its totient is φ = 5532729653856.

The previous prime is 20747736202099. The next prime is 20747736202159. The reversal of 20747736202140 is 4120263774702.

20747736202140 is a `hidden beast` number, since 2 + 0 + 7 + 4 + 7 + 7 + 3 + 620 + 2 + 14 + 0 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 57632600382 + ... + 57632600741.

It is an arithmetic number, because the mean of its divisors is an integer number (1748188883714).

Almost surely, 2^{20747736202140} is an apocalyptic number.

20747736202140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20747736202140 is an abundant number, since it is smaller than the sum of its proper divisors (42187063611564).

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

20747736202140 is a wasteful number, since it uses less digits than its factorization.

20747736202140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115265201138 (or 115265201133 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 45.

Adding to 20747736202140 its reverse (4120263774702), we get a palindrome (24867999976842).

The spelling of 20747736202140 in words is "twenty trillion, seven hundred forty-seven billion, seven hundred thirty-six million, two hundred two thousand, one hundred forty".