73706670040 has 32 divisors (see below), whose sum is σ = 165979828080. Its totient is φ = 29457811072.

The previous prime is 73706669941. The next prime is 73706670047. The reversal of 73706670040 is 4007660737.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 73706669975 and 73706670002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73706670047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728707 + ... + 823666.

Almost surely, 2^73706670040 is an apocalyptic number.

It is an amenable number.

73706670040 is an abundant number, since it is smaller than the sum of its proper divisors (92273158040).

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

73706670040 is a wasteful number, since it uses less digits than its factorization.

73706670040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553571 (or 1553567 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 40.

The spelling of 73706670040 in words is "seventy-three billion, seven hundred six million, six hundred seventy thousand, forty".