64790237791 has 8 divisors (see below), whose sum is σ = 64872148320. Its totient is φ = 64708379232.

The previous prime is 64790237789. The next prime is 64790237807. The reversal of 64790237791 is 19773209746.

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

It is a cyclic number.

It is not a de Polignac number, because 64790237791 - 2¹ = 64790237789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64790237731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872305 + ... + 2894773.

It is an arithmetic number, because the mean of its divisors is an integer number (8109018540).

Almost surely, 2^64790237791 is an apocalyptic number.

64790237791 is a deficient number, since it is larger than the sum of its proper divisors (81910529).

64790237791 is a wasteful number, since it uses less digits than its factorization.

64790237791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25985.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 64790237791 in words is "sixty-four billion, seven hundred ninety million, two hundred thirty-seven thousand, seven hundred ninety-one".