999506290537 has 2 divisors, whose sum is σ = 999506290538. Its totient is φ = 999506290536.

The previous prime is 999506290529. The next prime is 999506290649. The reversal of 999506290537 is 735092605999.

It is the 408148-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687289082841 + 312217207696 = 829029^2 + 558764^2 .

It is a cyclic number.

It is not a de Polignac number, because 999506290537 - 2³ = 999506290529 is a prime.

It is not a weakly prime, because it can be changed into another prime (999506290337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499753145268 + 499753145269.

It is an arithmetic number, because the mean of its divisors is an integer number (499753145269).

Almost surely, 2^999506290537 is an apocalyptic number.

It is an amenable number.

999506290537 is a deficient number, since it is larger than the sum of its proper divisors (1).

999506290537 is an equidigital number, since it uses as much as digits as its factorization.

999506290537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41334300, while the sum is 64.

The spelling of 999506290537 in words is "nine hundred ninety-nine billion, five hundred six million, two hundred ninety thousand, five hundred thirty-seven".