17951137940742 has 16 divisors (see below), whose sum is σ = 36237811171392. Its totient is φ = 5927790098600.

The previous prime is 17951137940689. The next prime is 17951137940783. The reversal of 17951137940742 is 24704973115971.

It is a congruent number.

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, 13980636384 + ... + 13980637667.

It is an arithmetic number, because the mean of its divisors is an integer number (2264863198212).

Almost surely, 2^{17951137940742} is an apocalyptic number.

17951137940742 is an abundant number, since it is smaller than the sum of its proper divisors (18286673230650).

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

17951137940742 is a wasteful number, since it uses less digits than its factorization.

17951137940742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27961274163.

The product of its (nonzero) digits is 13335840, while the sum is 60.

The spelling of 17951137940742 in words is "seventeen trillion, nine hundred fifty-one billion, one hundred thirty-seven million, nine hundred forty thousand, seven hundred forty-two".