64040154744 has 32 divisors (see below), whose sum is σ = 160110432000. Its totient is φ = 21345378912.

The previous prime is 64040154727. The next prime is 64040154751. The reversal of 64040154744 is 44745104046.

It is a super-2 number, since 2×64040154744² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353347 + ... + 502925.

It is an arithmetic number, because the mean of its divisors is an integer number (5003451000).

Almost surely, 2^64040154744 is an apocalyptic number.

It is an amenable number.

64040154744 is an abundant number, since it is smaller than the sum of its proper divisors (96070277256).

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

64040154744 is a wasteful number, since it uses less digits than its factorization.

64040154744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167427 (or 167423 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 39.

The spelling of 64040154744 in words is "sixty-four billion, forty million, one hundred fifty-four thousand, seven hundred forty-four".