64951399552 has 96 divisors (see below), whose sum is σ = 143375039280. Its totient is φ = 29279996928.

The previous prime is 64951399523. The next prime is 64951399553. The reversal of 64951399552 is 25599315946.

It is not an unprimeable number, because it can be changed into a prime (64951399553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 895263 + ... + 965089.

Almost surely, 2^64951399552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64951399552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71687519640).

64951399552 is an abundant number, since it is smaller than the sum of its proper divisors (78423639728).

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

64951399552 is a wasteful number, since it uses less digits than its factorization.

64951399552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69910 (or 69885 counting only the distinct ones).

The product of its digits is 13122000, while the sum is 58.

The spelling of 64951399552 in words is "sixty-four billion, nine hundred fifty-one million, three hundred ninety-nine thousand, five hundred fifty-two".