73700404040 has 16 divisors (see below), whose sum is σ = 165825909180. Its totient is φ = 29480161600.

The previous prime is 73700404031. The next prime is 73700404067. The reversal of 73700404040 is 4040400737.

It can be written as a sum of positive squares in 2 ways, for example, as 71078759236 + 2621644804 = 266606^2 + 51202^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73700403994 and 73700404012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921255011 + ... + 921255090.

Almost surely, 2^73700404040 is an apocalyptic number.

It is an amenable number.

73700404040 is an abundant number, since it is smaller than the sum of its proper divisors (92125505140).

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

73700404040 is a wasteful number, since it uses less digits than its factorization.

73700404040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842510112 (or 1842510108 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 29.

Adding to 73700404040 its reverse (4040400737), we get a palindrome (77740804777).

The spelling of 73700404040 in words is "seventy-three billion, seven hundred million, four hundred four thousand, forty".