64625862648 has 32 divisors (see below), whose sum is σ = 170068060800. Its totient is φ = 20408167008.

The previous prime is 64625862643. The next prime is 64625862683. The reversal of 64625862648 is 84626852646.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64625862643) 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, 70861236 + ... + 70862147.

It is an arithmetic number, because the mean of its divisors is an integer number (5314626900).

Almost surely, 2^64625862648 is an apocalyptic number.

It is an amenable number.

64625862648 is an abundant number, since it is smaller than the sum of its proper divisors (105442198152).

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

64625862648 is a wasteful number, since it uses less digits than its factorization.

64625862648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141723411 (or 141723407 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 57.

The spelling of 64625862648 in words is "sixty-four billion, six hundred twenty-five million, eight hundred sixty-two thousand, six hundred forty-eight".