69990544040 has 32 divisors (see below), whose sum is σ = 161319672360. Its totient is φ = 27313382400.

The previous prime is 69990544031. The next prime is 69990544051. The reversal of 69990544040 is 4044509996.

It can be written as a sum of positive squares in 4 ways, for example, as 49674602884 + 20315941156 = 222878^2 + 142534^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 69990544040.

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, 21336941 + ... + 21340220.

Almost surely, 2^69990544040 is an apocalyptic number.

It is an amenable number.

69990544040 is an abundant number, since it is smaller than the sum of its proper divisors (91329128320).

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

69990544040 is a wasteful number, since it uses less digits than its factorization.

69990544040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42677213 (or 42677209 counting only the distinct ones).

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

The spelling of 69990544040 in words is "sixty-nine billion, nine hundred ninety million, five hundred forty-four thousand, forty".