7643251656275 has 24 divisors (see below), whose sum is σ = 9548015187024. Its totient is φ = 6069204108800.

The previous prime is 7643251656263. The next prime is 7643251656301. The reversal of 7643251656275 is 5726561523467.

It is not a de Polignac number, because 7643251656275 - 2¹⁰ = 7643251655251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 27849119 + ... + 28122231.

It is an arithmetic number, because the mean of its divisors is an integer number (397833966126).

Almost surely, 2^{7643251656275} is an apocalyptic number.

7643251656275 is a deficient number, since it is larger than the sum of its proper divisors (1904763530749).

7643251656275 is a wasteful number, since it uses less digits than its factorization.

7643251656275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281431 (or 281426 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 59.

The spelling of 7643251656275 in words is "seven trillion, six hundred forty-three billion, two hundred fifty-one million, six hundred fifty-six thousand, two hundred seventy-five".