64420400013 has 8 divisors (see below), whose sum is σ = 85905689568. Its totient is φ = 42941021904.

The previous prime is 64420399957. The next prime is 64420400047. The reversal of 64420400013 is 31000402446.

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

It is not a de Polignac number, because 64420400013 - 2²⁴ = 64403622797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64420400063) 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, 1452370 + ... + 1496067.

It is an arithmetic number, because the mean of its divisors is an integer number (10738211196).

Almost surely, 2^64420400013 is an apocalyptic number.

It is an amenable number.

64420400013 is a deficient number, since it is larger than the sum of its proper divisors (21485289555).

64420400013 is a wasteful number, since it uses less digits than its factorization.

64420400013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955723.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 64420400013 its reverse (31000402446), we get a palindrome (95420802459).

The spelling of 64420400013 in words is "sixty-four billion, four hundred twenty million, four hundred thousand, thirteen".