73491749664 has 48 divisors (see below), whose sum is σ = 192990107520. Its totient is φ = 24487819520.

The previous prime is 73491749647. The next prime is 73491749671. The reversal of 73491749664 is 46694719437.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×73491749664² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73491749598 and 73491749607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105577 + ... + 397655.

It is an arithmetic number, because the mean of its divisors is an integer number (4020627240).

Almost surely, 2^73491749664 is an apocalyptic number.

It is an amenable number.

73491749664 is an abundant number, since it is smaller than the sum of its proper divisors (119498357856).

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

73491749664 is a wasteful number, since it uses less digits than its factorization.

73491749664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294713 (or 294705 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 60.

The spelling of 73491749664 in words is "seventy-three billion, four hundred ninety-one million, seven hundred forty-nine thousand, six hundred sixty-four".