64677810479 has 8 divisors (see below), whose sum is σ = 68488876080. Its totient is φ = 60867465856.

The previous prime is 64677810437. The next prime is 64677810487. The reversal of 64677810479 is 97401877646.

It is a happy number.

64677810479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64677810479 - 2¹² = 64677806383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64677810179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10217 + ... + 359805.

It is an arithmetic number, because the mean of its divisors is an integer number (8561109510).

Almost surely, 2^64677810479 is an apocalyptic number.

64677810479 is a deficient number, since it is larger than the sum of its proper divisors (3811065601).

64677810479 is a wasteful number, since it uses less digits than its factorization.

64677810479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360489.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 64677810479 in words is "sixty-four billion, six hundred seventy-seven million, eight hundred ten thousand, four hundred seventy-nine".