64461438055 has 32 divisors (see below), whose sum is σ = 88775451648. Its totient is φ = 44016825600.

The previous prime is 64461438029. The next prime is 64461438079. The reversal of 64461438055 is 55083416446.

It is not a de Polignac number, because 64461438055 - 2⁵ = 64461438023 is a prime.

It is a super-2 number, since 2×64461438055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64461437996 and 64461438014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14376844 + ... + 14381326.

It is an arithmetic number, because the mean of its divisors is an integer number (2774232864).

Almost surely, 2^64461438055 is an apocalyptic number.

64461438055 is a deficient number, since it is larger than the sum of its proper divisors (24314013593).

64461438055 is a wasteful number, since it uses less digits than its factorization.

64461438055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6127.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 64461438055 in words is "sixty-four billion, four hundred sixty-one million, four hundred thirty-eight thousand, fifty-five".