64401206932905 has 48 divisors (see below), whose sum is σ = 111403079996544. Its totient is φ = 31745909341440.

The previous prime is 64401206932903. The next prime is 64401206932961. The reversal of 64401206932905 is 50923960210446.

It is not a de Polignac number, because 64401206932905 - 2¹ = 64401206932903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64401206932901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144815949 + ... + 145259978.

It is an arithmetic number, because the mean of its divisors is an integer number (2320897499928).

Almost surely, 2^{64401206932905} is an apocalyptic number.

It is an amenable number.

64401206932905 is a deficient number, since it is larger than the sum of its proper divisors (47001873063639).

64401206932905 is a wasteful number, since it uses less digits than its factorization.

64401206932905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290076014 (or 290075995 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 64401206932905 in words is "sixty-four trillion, four hundred one billion, two hundred six million, nine hundred thirty-two thousand, nine hundred five".