64399699292 has 6 divisors (see below), whose sum is σ = 112699473768. Its totient is φ = 32199849644.

The previous prime is 64399699289. The next prime is 64399699333. The reversal of 64399699292 is 29299699346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8049962408 + ... + 8049962415.

It is an arithmetic number, because the mean of its divisors is an integer number (18783245628).

Almost surely, 2^64399699292 is an apocalyptic number.

It is an amenable number.

64399699292 is a deficient number, since it is larger than the sum of its proper divisors (48299774476).

64399699292 is a wasteful number, since it uses less digits than its factorization.

64399699292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16099924827 (or 16099924825 counting only the distinct ones).

The product of its digits is 102036672, while the sum is 68.

The spelling of 64399699292 in words is "sixty-four billion, three hundred ninety-nine million, six hundred ninety-nine thousand, two hundred ninety-two".