23828777091 has 24 divisors (see below), whose sum is σ = 39351742560. Its totient is φ = 13611131136.

The previous prime is 23828777087. The next prime is 23828777131. The reversal of 23828777091 is 19077782832.

It is not a de Polignac number, because 23828777091 - 2² = 23828777087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23828777041) 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, 91881 + ... + 236853.

It is an arithmetic number, because the mean of its divisors is an integer number (1639655940).

Almost surely, 2^23828777091 is an apocalyptic number.

23828777091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23828777091 is a deficient number, since it is larger than the sum of its proper divisors (15522965469).

23828777091 is a wasteful number, since it uses less digits than its factorization.

23828777091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147595 (or 147592 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 23828777091 in words is "twenty-three billion, eight hundred twenty-eight million, seven hundred seventy-seven thousand, ninety-one".