990303032137 has 2 divisors, whose sum is σ = 990303032138. Its totient is φ = 990303032136.

The previous prime is 990303032099. The next prime is 990303032141. The reversal of 990303032137 is 731230303099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 552827938576 + 437475093561 = 743524^2 + 661419^2 .

It is a cyclic number.

It is not a de Polignac number, because 990303032137 - 2¹⁵ = 990302999369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 990303032137.

It is not a weakly prime, because it can be changed into another prime (990303030137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495151516068 + 495151516069.

It is an arithmetic number, because the mean of its divisors is an integer number (495151516069).

Almost surely, 2^990303032137 is an apocalyptic number.

It is an amenable number.

990303032137 is a deficient number, since it is larger than the sum of its proper divisors (1).

990303032137 is an equidigital number, since it uses as much as digits as its factorization.

990303032137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 40.

The spelling of 990303032137 in words is "nine hundred ninety billion, three hundred three million, thirty-two thousand, one hundred thirty-seven".