64340192949 has 8 divisors (see below), whose sum is σ = 85795586400. Its totient is φ = 42889130736.

The previous prime is 64340192923. The next prime is 64340192963. The reversal of 64340192949 is 94929104346.

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

It is not a de Polignac number, because 64340192949 - 2¹³ = 64340184757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64340192909) 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, 1047987 + ... + 1107680.

It is an arithmetic number, because the mean of its divisors is an integer number (10724448300).

Almost surely, 2^64340192949 is an apocalyptic number.

It is an amenable number.

64340192949 is a deficient number, since it is larger than the sum of its proper divisors (21455393451).

64340192949 is a wasteful number, since it uses less digits than its factorization.

64340192949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165619.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 64340192949 in words is "sixty-four billion, three hundred forty million, one hundred ninety-two thousand, nine hundred forty-nine".