2136400044 has 48 divisors (see below), whose sum is σ = 5047590912. Its totient is φ = 703222272.

The previous prime is 2136400039. The next prime is 2136400069. The reversal of 2136400044 is 4400046312.

It is a junction number, because it is equal to n+sod(n) for n = 2136399987 and 2136400023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471132 + ... + 475644.

It is an arithmetic number, because the mean of its divisors is an integer number (105158144).

Almost surely, 2^2136400044 is an apocalyptic number.

It is an amenable number.

2136400044 is an abundant number, since it is smaller than the sum of its proper divisors (2911190868).

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

2136400044 is a wasteful number, since it uses less digits than its factorization.

2136400044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006 (or 5004 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2136400044 is about 46221.2077297857. The cubic root of 2136400044 is about 1287.9357334226.

Adding to 2136400044 its reverse (4400046312), we get a palindrome (6536446356).

The spelling of 2136400044 in words is "two billion, one hundred thirty-six million, four hundred thousand, forty-four".