2136572718 has 64 divisors (see below), whose sum is σ = 5204459520. Its totient is φ = 571472352.

The previous prime is 2136572717. The next prime is 2136572719. The reversal of 2136572718 is 8172756312.

It is an interprime number because it is at equal distance from previous prime (2136572717) and next prime (2136572719).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2136572718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136572717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21873 + ... + 68931.

It is an arithmetic number, because the mean of its divisors is an integer number (81319680).

Almost surely, 2^2136572718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2136572718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2602229760).

2136572718 is an abundant number, since it is smaller than the sum of its proper divisors (3067886802).

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

2136572718 is a wasteful number, since it uses less digits than its factorization.

2136572718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47141.

The product of its digits is 141120, while the sum is 42.

The square root of 2136572718 is about 46223.0756008295. The cubic root of 2136572718 is about 1287.9704315158.

The spelling of 2136572718 in words is "two billion, one hundred thirty-six million, five hundred seventy-two thousand, seven hundred eighteen".