999762690049 has 2 divisors, whose sum is σ = 999762690050. Its totient is φ = 999762690048.

The previous prime is 999762689987. The next prime is 999762690089. The reversal of 999762690049 is 940096267999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 984748599025 + 15014091024 = 992345^2 + 122532^2 .

It is a cyclic number.

It is not a de Polignac number, because 999762690049 - 2⁷ = 999762689921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999762690049.

It is not a weakly prime, because it can be changed into another prime (999762690089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499881345024 + 499881345025.

It is an arithmetic number, because the mean of its divisors is an integer number (499881345025).

It is a Proth number, since it is equal to 119181 ⋅ 2²³ + 1 and 119181 < 2²³.

Almost surely, 2^999762690049 is an apocalyptic number.

It is an amenable number.

999762690049 is a deficient number, since it is larger than the sum of its proper divisors (1).

999762690049 is an equidigital number, since it uses as much as digits as its factorization.

999762690049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119042784, while the sum is 70.

The spelling of 999762690049 in words is "nine hundred ninety-nine billion, seven hundred sixty-two million, six hundred ninety thousand, forty-nine".