64676481351 has 16 divisors (see below), whose sum is σ = 91319042304. Its totient is φ = 40576402304.

The previous prime is 64676481349. The next prime is 64676481371. The reversal of 64676481351 is 15318467646.

It is a cyclic number.

It is not a de Polignac number, because 64676481351 - 2¹ = 64676481349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 64676481294 and 64676481303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64676481341) 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 15 ways as a sum of consecutive naturals, for example, 373606 + ... + 518588.

It is an arithmetic number, because the mean of its divisors is an integer number (5707440144).

Almost surely, 2^64676481351 is an apocalyptic number.

64676481351 is a deficient number, since it is larger than the sum of its proper divisors (26642560953).

64676481351 is a wasteful number, since it uses less digits than its factorization.

64676481351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153750.

The product of its digits is 2903040, while the sum is 51.

The spelling of 64676481351 in words is "sixty-four billion, six hundred seventy-six million, four hundred eighty-one thousand, three hundred fifty-one".