64419691446 has 64 divisors (see below), whose sum is σ = 156776981760. Its totient is φ = 19445114880.

The previous prime is 64419691433. The next prime is 64419691487.

64419691446 is a `hidden beast` number, since 6 + 4 + 4 + 196 + 9 + 1 + 446 = 666.

64419691446 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 64419691392 and 64419691401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58336 + ... + 363651.

It is an arithmetic number, because the mean of its divisors is an integer number (2449640340).

Almost surely, 2^64419691446 is an apocalyptic number.

64419691446 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64419691446 is an abundant number, since it is smaller than the sum of its proper divisors (92357290314).

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

64419691446 is a wasteful number, since it uses less digits than its factorization.

64419691446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422266 (or 422260 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 64419691446 in words is "sixty-four billion, four hundred nineteen million, six hundred ninety-one thousand, four hundred forty-six".