999999951111012 has 48 divisors (see below), whose sum is σ = 2371589192577024. Its totient is φ = 327868199232000.

The previous prime is 999999951110999. The next prime is 999999951111017. The reversal of 999999951111012 is 210111159999999.

It is not an unprimeable number, because it can be changed into a prime (999999951111017) 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, 510038812 + ... + 511995692.

It is an arithmetic number, because the mean of its divisors is an integer number (49408108178688).

Almost surely, 2^{999999951111012} is an apocalyptic number.

It is an amenable number.

999999951111012 is an abundant number, since it is smaller than the sum of its proper divisors (1371589241466012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999999951111012 is a wasteful number, since it uses less digits than its factorization.

999999951111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655060 (or 2655058 counting only the distinct ones).

The product of its (nonzero) digits is 47829690, while the sum is 75.

The spelling of 999999951111012 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred fifty-one million, one hundred eleven thousand, twelve".