64514064280 has 32 divisors (see below), whose sum is σ = 145164723840. Its totient is φ = 25804189440.

The previous prime is 64514064233. The next prime is 64514064287. The reversal of 64514064280 is 8246041546.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64514064287) 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, 961177 + ... + 1026103.

It is an arithmetic number, because the mean of its divisors is an integer number (4536397620).

Almost surely, 2^64514064280 is an apocalyptic number.

It is an amenable number.

64514064280 is an abundant number, since it is smaller than the sum of its proper divisors (80650659560).

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

64514064280 is a wasteful number, since it uses less digits than its factorization.

64514064280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89779 (or 89775 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 64514064280 in words is "sixty-four billion, five hundred fourteen million, sixty-four thousand, two hundred eighty".