64540472859 has 12 divisors (see below), whose sum is σ = 93324632856. Its totient is φ = 42981056352.

The previous prime is 64540472849. The next prime is 64540472923. The reversal of 64540472859 is 95827404546.

64540472859 is a `hidden beast` number, since 6 + 4 + 540 + 47 + 2 + 8 + 59 = 666.

It is not a de Polignac number, because 64540472859 - 2⁵ = 64540472827 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (64540472809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3818229 + ... + 3835094.

It is an arithmetic number, because the mean of its divisors is an integer number (7777052738).

Almost surely, 2^64540472859 is an apocalyptic number.

64540472859 is a deficient number, since it is larger than the sum of its proper divisors (28784159997).

64540472859 is a wasteful number, since it uses less digits than its factorization.

64540472859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7654266 (or 7654263 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 64540472859 in words is "sixty-four billion, five hundred forty million, four hundred seventy-two thousand, eight hundred fifty-nine".