64715461268880 has 80 divisors (see below), whose sum is σ = 200656447522560. Its totient is φ = 17254142997504.

The previous prime is 64715461268879. The next prime is 64715461268881. The reversal of 64715461268880 is 8886216451746.

It is an interprime number because it is at equal distance from previous prime (64715461268879) and next prime (64715461268881).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×64715461268880³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (64715461268881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24632712 + ... + 27133031.

It is an arithmetic number, because the mean of its divisors is an integer number (2508205594032).

Almost surely, 2^{64715461268880} is an apocalyptic number.

64715461268880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64715461268880 is an abundant number, since it is smaller than the sum of its proper divisors (135940986253680).

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

64715461268880 is a wasteful number, since it uses less digits than its factorization.

64715461268880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51770968 (or 51770962 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 66.

The spelling of 64715461268880 in words is "sixty-four trillion, seven hundred fifteen billion, four hundred sixty-one million, two hundred sixty-eight thousand, eight hundred eighty".