64603412478 has 96 divisors (see below), whose sum is σ = 163959075072. Its totient is φ = 18165638400.

The previous prime is 64603412473. The next prime is 64603412513. The reversal of 64603412478 is 87421430646.

64603412478 is a `hidden beast` number, since 6 + 4 + 60 + 341 + 247 + 8 = 666.

It is a super-2 number, since 2×64603412478² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64603412473) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 103825 + ... + 374147.

It is an arithmetic number, because the mean of its divisors is an integer number (1707907032).

Almost surely, 2^64603412478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64603412478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81979537536).

64603412478 is an abundant number, since it is smaller than the sum of its proper divisors (99355662594).

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

64603412478 is a wasteful number, since it uses less digits than its factorization.

64603412478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270430 (or 270427 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 64603412478 in words is "sixty-four billion, six hundred three million, four hundred twelve thousand, four hundred seventy-eight".