64897833480 has 32 divisors (see below), whose sum is σ = 194693500800. Its totient is φ = 17306088896.

The previous prime is 64897833457. The next prime is 64897833499. The reversal of 64897833480 is 8433879846.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270407520 + ... + 270407759.

It is an arithmetic number, because the mean of its divisors is an integer number (6084171900).

Almost surely, 2^64897833480 is an apocalyptic number.

64897833480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64897833480 is an abundant number, since it is smaller than the sum of its proper divisors (129795667320).

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

64897833480 is a wasteful number, since it uses less digits than its factorization.

64897833480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540815293 (or 540815289 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 64897833480 in words is "sixty-four billion, eight hundred ninety-seven million, eight hundred thirty-three thousand, four hundred eighty".