64271072136 has 16 divisors (see below), whose sum is σ = 160677680400. Its totient is φ = 21423690704.

The previous prime is 64271072071. The next prime is 64271072197. The reversal of 64271072136 is 63127017246.

It is a junction number, because it is equal to n+sod(n) for n = 64271072094 and 64271072103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1338980646 + ... + 1338980693.

It is an arithmetic number, because the mean of its divisors is an integer number (10042355025).

Almost surely, 2^64271072136 is an apocalyptic number.

It is an amenable number.

64271072136 is an abundant number, since it is smaller than the sum of its proper divisors (96406608264).

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

64271072136 is a wasteful number, since it uses less digits than its factorization.

64271072136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677961348 (or 2677961344 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 64271072136 in words is "sixty-four billion, two hundred seventy-one million, seventy-two thousand, one hundred thirty-six".