64600016478 has 32 divisors (see below), whose sum is σ = 133636269312. Its totient is φ = 20804164800.

The previous prime is 64600016449. The next prime is 64600016491. The reversal of 64600016478 is 87461000646.

64600016478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1249428 + ... + 1300103.

It is an arithmetic number, because the mean of its divisors is an integer number (4176133416).

Almost surely, 2^64600016478 is an apocalyptic number.

64600016478 is an abundant number, since it is smaller than the sum of its proper divisors (69036252834).

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

64600016478 is a wasteful number, since it uses less digits than its factorization.

64600016478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549680.

The product of its (nonzero) digits is 193536, while the sum is 42.

The spelling of 64600016478 in words is "sixty-four billion, six hundred million, sixteen thousand, four hundred seventy-eight".