2136529980 has 96 divisors (see below), whose sum is σ = 7158312000. Its totient is φ = 525913344.

The previous prime is 2136529943. The next prime is 2136529981. The reversal of 2136529980 is 899256312.

2136529980 is a `hidden beast` number, since 2 + 1 + 36 + 529 + 98 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136529981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145155 + ... + 159194.

It is an arithmetic number, because the mean of its divisors is an integer number (74565750).

Almost surely, 2^2136529980 is an apocalyptic number.

2136529980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2136529980 is an abundant number, since it is smaller than the sum of its proper divisors (5021782020).

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

2136529980 is a wasteful number, since it uses less digits than its factorization.

2136529980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304380 (or 304372 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 2136529980 is about 46222.6132969567. The cubic root of 2136529980 is about 1287.9618436737.

The spelling of 2136529980 in words is "two billion, one hundred thirty-six million, five hundred twenty-nine thousand, nine hundred eighty".