64266251541 has 4 divisors (see below), whose sum is σ = 85688335392. Its totient is φ = 42844167692.

The previous prime is 64266251513. The next prime is 64266251549. The reversal of 64266251541 is 14515266246.

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.

It is a cyclic number.

It is not a de Polignac number, because 64266251541 - 2⁶ = 64266251477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64266251493 and 64266251502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64266251549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10711041921 + ... + 10711041926.

It is an arithmetic number, because the mean of its divisors is an integer number (21422083848).

Almost surely, 2^64266251541 is an apocalyptic number.

It is an amenable number.

64266251541 is a deficient number, since it is larger than the sum of its proper divisors (21422083851).

64266251541 is a wasteful number, since it uses less digits than its factorization.

64266251541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21422083850.

The product of its digits is 345600, while the sum is 42.

The spelling of 64266251541 in words is "sixty-four billion, two hundred sixty-six million, two hundred fifty-one thousand, five hundred forty-one".