64026262657 has 4 divisors (see below), whose sum is σ = 73172871616. Its totient is φ = 54879653700.

The previous prime is 64026262649. The next prime is 64026262661. The reversal of 64026262657 is 75626262046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75626262046 = 2 ⋅37813131023.

It is a cyclic number.

It is not a de Polignac number, because 64026262657 - 2³ = 64026262649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64026262697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4573304469 + ... + 4573304482.

It is an arithmetic number, because the mean of its divisors is an integer number (18293217904).

Almost surely, 2^64026262657 is an apocalyptic number.

It is an amenable number.

64026262657 is a deficient number, since it is larger than the sum of its proper divisors (9146608959).

64026262657 is an equidigital number, since it uses as much as digits as its factorization.

64026262657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146608958.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 64026262657 in words is "sixty-four billion, twenty-six million, two hundred sixty-two thousand, six hundred fifty-seven".