64396555480 has 32 divisors (see below), whose sum is σ = 144961863840. Its totient is φ = 25746246400.

The previous prime is 64396555477. The next prime is 64396555481. The reversal of 64396555480 is 8455569346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64396555481) 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, 302221 + ... + 469180.

It is an arithmetic number, because the mean of its divisors is an integer number (4530058245).

Almost surely, 2^64396555480 is an apocalyptic number.

It is an amenable number.

64396555480 is an abundant number, since it is smaller than the sum of its proper divisors (80565308360).

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

64396555480 is a wasteful number, since it uses less digits than its factorization.

64396555480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773499 (or 773495 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 55.

The spelling of 64396555480 in words is "sixty-four billion, three hundred ninety-six million, five hundred fifty-five thousand, four hundred eighty".