2136642899076 has 243 divisors, whose sum is σ = 6529125497349. Its totient is φ = 609995800512.

The previous prime is 2136642899059. The next prime is 2136642899101. The reversal of 2136642899076 is 6709982466312.

The square root of 2136642899076 is 1461726.

It is a perfect power (a square), and thus also a powerful number.

2136642899076 is a `hidden beast` number, since 2 + 1 + 366 + 42 + 89 + 90 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1733367097476 + 403275801600 = 1316574^2 + 635040^2 .

It is a tau number, because it is divible by the number of its divisors (243).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1657596640 + ... + 1657597928.

Almost surely, 2^{2136642899076} is an apocalyptic number.

2136642899076 is the 1461726-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2136642899076

2136642899076 is an abundant number, since it is smaller than the sum of its proper divisors (4392482598273).

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

2136642899076 is an frugal number, since it uses more digits than its factorization.

2136642899076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 2136642899076 in words is "two trillion, one hundred thirty-six billion, six hundred forty-two million, eight hundred ninety-nine thousand, seventy-six".