64751961948 has 24 divisors (see below), whose sum is σ = 151130774928. Its totient is φ = 21577863936.

The previous prime is 64751961947. The next prime is 64751961949. The reversal of 64751961948 is 84916915746.

It is an interprime number because it is at equal distance from previous prime (64751961947) and next prime (64751961949).

It is a super-2 number, since 2×64751961948² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64751961891 and 64751961900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64751961941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721261 + ... + 806052.

It is an arithmetic number, because the mean of its divisors is an integer number (6297115622).

Almost surely, 2^64751961948 is an apocalyptic number.

It is an amenable number.

64751961948 is an abundant number, since it is smaller than the sum of its proper divisors (86378812980).

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

64751961948 is a wasteful number, since it uses less digits than its factorization.

64751961948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530853 (or 1530851 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The spelling of 64751961948 in words is "sixty-four billion, seven hundred fifty-one million, nine hundred sixty-one thousand, nine hundred forty-eight".