64946703744 has 256 divisors, whose sum is σ = 215406374400. Its totient is φ = 19114444800.

The previous prime is 64946703739. The next prime is 64946703749. The reversal of 64946703744 is 44730764946.

It is an interprime number because it is at equal distance from previous prime (64946703739) and next prime (64946703749).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64946703749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1001919 + ... + 1064769.

It is an arithmetic number, because the mean of its divisors is an integer number (841431150).

Almost surely, 2^64946703744 is an apocalyptic number.

64946703744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64946703744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107703187200).

64946703744 is an abundant number, since it is smaller than the sum of its proper divisors (150459670656).

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

64946703744 is a wasteful number, since it uses less digits than its factorization.

64946703744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62910 (or 62892 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 54.

The spelling of 64946703744 in words is "sixty-four billion, nine hundred forty-six million, seven hundred three thousand, seven hundred forty-four".