19975367973 has 16 divisors (see below), whose sum is σ = 29086134336. Its totient is φ = 12093344640.

The previous prime is 19975367953. The next prime is 19975367987. The reversal of 19975367973 is 37976357991.

It is not a de Polignac number, because 19975367973 - 2¹⁷ = 19975236901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19975367953) 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, 292086 + ... + 353927.

It is an arithmetic number, because the mean of its divisors is an integer number (1817883396).

Almost surely, 2^19975367973 is an apocalyptic number.

It is an amenable number.

19975367973 is a deficient number, since it is larger than the sum of its proper divisors (9110766363).

19975367973 is a wasteful number, since it uses less digits than its factorization.

19975367973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646964.

The product of its digits is 67512690, while the sum is 66.

The spelling of 19975367973 in words is "nineteen billion, nine hundred seventy-five million, three hundred sixty-seven thousand, nine hundred seventy-three".