136444732720 has 40 divisors (see below), whose sum is σ = 317341836144. Its totient is φ = 54559341312.

The previous prime is 136444732681. The next prime is 136444732727. The reversal of 136444732720 is 27237444631.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (136444732727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51834 + ... + 524953.

Almost surely, 2^136444732720 is an apocalyptic number.

136444732720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136444732720 is an abundant number, since it is smaller than the sum of its proper divisors (180897103424).

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

136444732720 is a wasteful number, since it uses less digits than its factorization.

136444732720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579757 (or 579751 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 43.

The spelling of 136444732720 in words is "one hundred thirty-six billion, four hundred forty-four million, seven hundred thirty-two thousand, seven hundred twenty".