64105598540 has 24 divisors (see below), whose sum is σ = 134641757040. Its totient is φ = 25638429888.

The previous prime is 64105598533. The next prime is 64105598591. The reversal of 64105598540 is 4589550146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98102 + ... + 371261.

It is an arithmetic number, because the mean of its divisors is an integer number (5610073210).

Almost surely, 2^64105598540 is an apocalyptic number.

It is an amenable number.

64105598540 is an abundant number, since it is smaller than the sum of its proper divisors (70536158500).

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

64105598540 is a wasteful number, since it uses less digits than its factorization.

64105598540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476201 (or 476199 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 64105598540 in words is "sixty-four billion, one hundred five million, five hundred ninety-eight thousand, five hundred forty".