46891378672 has 20 divisors (see below), whose sum is σ = 91505662360. Its totient is φ = 23277014208.

The previous prime is 46891378657. The next prime is 46891378673. The reversal of 46891378672 is 27687319864.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 46891378672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46891378673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10539903 + ... + 10544350.

It is an arithmetic number, because the mean of its divisors is an integer number (4575283118).

Almost surely, 2^46891378672 is an apocalyptic number.

It is an amenable number.

46891378672 is a deficient number, since it is larger than the sum of its proper divisors (44614283688).

46891378672 is a wasteful number, since it uses less digits than its factorization.

46891378672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21084400 (or 21084394 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 61.

The spelling of 46891378672 in words is "forty-six billion, eight hundred ninety-one million, three hundred seventy-eight thousand, six hundred seventy-two".