73404749040 has 80 divisors (see below), whose sum is σ = 260062545408. Its totient is φ = 16778227968.

The previous prime is 73404749039. The next prime is 73404749057. The reversal of 73404749040 is 4094740437.

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

It is a super-3 number, since 3×73404749040³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 73404748983 and 73404749001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21844972 + ... + 21848331.

Almost surely, 2^73404749040 is an apocalyptic number.

73404749040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

73404749040 is an abundant number, since it is smaller than the sum of its proper divisors (186657796368).

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

73404749040 is a wasteful number, since it uses less digits than its factorization.

73404749040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43693326 (or 43693320 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 73404749040 in words is "seventy-three billion, four hundred four million, seven hundred forty-nine thousand, forty".