140550509394 has 48 divisors (see below), whose sum is σ = 316018003392. Its totient is φ = 46818548208.

The previous prime is 140550509383. The next prime is 140550509419. The reversal of 140550509394 is 493905055041.

140550509394 is a `hidden beast` number, since 1 + 4 + 0 + 5 + 50 + 509 + 3 + 94 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628747 + ... + 822449.

It is an arithmetic number, because the mean of its divisors is an integer number (6583708404).

Almost surely, 2^140550509394 is an apocalyptic number.

140550509394 is an abundant number, since it is smaller than the sum of its proper divisors (175467493998).

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

140550509394 is a wasteful number, since it uses less digits than its factorization.

140550509394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195213 (or 195201 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 140550509394 in words is "one hundred forty billion, five hundred fifty million, five hundred nine thousand, three hundred ninety-four".