16740155991 has 16 divisors (see below), whose sum is σ = 24044148576. Its totient is φ = 10298633856.

The previous prime is 16740155989. The next prime is 16740156047. The reversal of 16740155991 is 19955104761.

It is not a de Polignac number, because 16740155991 - 2¹ = 16740155989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16740155991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16740155981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77041 + ... + 198533.

It is an arithmetic number, because the mean of its divisors is an integer number (1502759286).

Almost surely, 2^16740155991 is an apocalyptic number.

16740155991 is a deficient number, since it is larger than the sum of its proper divisors (7303992585).

16740155991 is a wasteful number, since it uses less digits than its factorization.

16740155991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125042.

The product of its (nonzero) digits is 340200, while the sum is 48.

The spelling of 16740155991 in words is "sixteen billion, seven hundred forty million, one hundred fifty-five thousand, nine hundred ninety-one".