64017447690 has 64 divisors (see below), whose sum is σ = 175615522560. Its totient is φ = 14630492160.

The previous prime is 64017447673. The next prime is 64017447691. The reversal of 64017447690 is 9674471046.

It is a super-2 number, since 2×64017447690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64017447691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1858020 + ... + 1892160.

It is an arithmetic number, because the mean of its divisors is an integer number (2743992540).

Almost surely, 2^64017447690 is an apocalyptic number.

64017447690 is an abundant number, since it is smaller than the sum of its proper divisors (111598074870).

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

64017447690 is a wasteful number, since it uses less digits than its factorization.

64017447690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43087.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 64017447690 in words is "sixty-four billion, seventeen million, four hundred forty-seven thousand, six hundred ninety".