999650976993 has 16 divisors (see below), whose sum is σ = 1484337923200. Its totient is φ = 664915903920.

The previous prime is 999650976991. The next prime is 999650977009. The reversal of 999650976993 is 399679056999.

It is not a de Polignac number, because 999650976993 - 2¹ = 999650976991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999650976991) 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, 42156838 + ... + 42180543.

It is an arithmetic number, because the mean of its divisors is an integer number (92771120200).

Almost surely, 2^999650976993 is an apocalyptic number.

It is an amenable number.

999650976993 is a deficient number, since it is larger than the sum of its proper divisors (484686946207).

999650976993 is a wasteful number, since it uses less digits than its factorization.

999650976993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84337829 (or 84337823 counting only the distinct ones).

The product of its (nonzero) digits is 2008846980, while the sum is 81.

The spelling of 999650976993 in words is "nine hundred ninety-nine billion, six hundred fifty million, nine hundred seventy-six thousand, nine hundred ninety-three".