2123766997 has 8 divisors (see below), whose sum is σ = 2317325472. Its totient is φ = 1930290000.

The previous prime is 2123766979. The next prime is 2123767001. The reversal of 2123766997 is 7996673212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123766997 - 2¹¹ = 2123764949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123766937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42622 + ... + 77872.

It is an arithmetic number, because the mean of its divisors is an integer number (289665684).

Almost surely, 2^2123766997 is an apocalyptic number.

It is an amenable number.

2123766997 is a deficient number, since it is larger than the sum of its proper divisors (193558475).

2123766997 is a wasteful number, since it uses less digits than its factorization.

2123766997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40739.

The product of its digits is 1714608, while the sum is 52.

The square root of 2123766997 is about 46084.3465506456. The cubic root of 2123766997 is about 1285.3920885600.

The spelling of 2123766997 in words is "two billion, one hundred twenty-three million, seven hundred sixty-six thousand, nine hundred ninety-seven".