64040725047 has 8 divisors (see below), whose sum is σ = 91955912944. Its totient is φ = 39409676928.

The previous prime is 64040725037. The next prime is 64040725057. The reversal of 64040725047 is 74052704046.

It is an interprime number because it is at equal distance from previous prime (64040725037) and next prime (64040725057).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64040725047 - 2¹⁵ = 64040692279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1642069873 = 64040725047 / (6 + 4 + 0 + 4 + 0 + 7 + 2 + 5 + 0 + 4 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64040724996 and 64040725014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64040725037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821034898 + ... + 821034975.

It is an arithmetic number, because the mean of its divisors is an integer number (11494489118).

Almost surely, 2^64040725047 is an apocalyptic number.

64040725047 is a deficient number, since it is larger than the sum of its proper divisors (27915187897).

64040725047 is a wasteful number, since it uses less digits than its factorization.

64040725047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642069889.

The product of its (nonzero) digits is 188160, while the sum is 39.

The spelling of 64040725047 in words is "sixty-four billion, forty million, seven hundred twenty-five thousand, forty-seven".