47909390811 has 24 divisors (see below), whose sum is σ = 66336544560. Its totient is φ = 30754948224.

The previous prime is 47909390801. The next prime is 47909390813. The reversal of 47909390811 is 11809390974.

It is a happy number.

It is not a de Polignac number, because 47909390811 - 2⁵ = 47909390779 is a prime.

It is a super-2 number, since 2×47909390811² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47909390813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 915625 + ... + 966533.

It is an arithmetic number, because the mean of its divisors is an integer number (2764022690).

Almost surely, 2^47909390811 is an apocalyptic number.

47909390811 is a deficient number, since it is larger than the sum of its proper divisors (18427153749).

47909390811 is a wasteful number, since it uses less digits than its factorization.

47909390811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51343 (or 51314 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 47909390811 in words is "forty-seven billion, nine hundred nine million, three hundred ninety thousand, eight hundred eleven".