995006945781 has 32 divisors (see below), whose sum is σ = 1521753277440. Its totient is φ = 641890267200.

The previous prime is 995006945743. The next prime is 995006945783. The reversal of 995006945781 is 187549600599.

995006945781 is a `hidden beast` number, since 9 + 9 + 50 + 0 + 6 + 9 + 4 + 578 + 1 = 666.

It is not a de Polignac number, because 995006945781 - 2⁶ = 995006945717 is a prime.

It is a super-2 number, since 2×995006945781² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (995006945783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12969571 + ... + 13046063.

It is an arithmetic number, because the mean of its divisors is an integer number (47554789920).

Almost surely, 2^995006945781 is an apocalyptic number.

It is an amenable number.

995006945781 is a deficient number, since it is larger than the sum of its proper divisors (526746331659).

995006945781 is a wasteful number, since it uses less digits than its factorization.

995006945781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92074 (or 92068 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 995006945781 in words is "nine hundred ninety-five billion, six million, nine hundred forty-five thousand, seven hundred eighty-one".