46991506640 has 80 divisors (see below), whose sum is σ = 120839588688. Its totient is φ = 16881758208.

The previous prime is 46991506571. The next prime is 46991506651. The reversal of 46991506640 is 4660519964.

It can be written as a sum of positive squares in 8 ways, for example, as 27415696 + 46964090944 = 5236^2 + 216712^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572117 + ... + 649076.

Almost surely, 2^46991506640 is an apocalyptic number.

46991506640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

46991506640 is an abundant number, since it is smaller than the sum of its proper divisors (73848082048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

46991506640 is a wasteful number, since it uses less digits than its factorization.

46991506640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221256 (or 1221250 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 46991506640 in words is "forty-six billion, nine hundred ninety-one million, five hundred six thousand, six hundred forty".