23802139091 has 2 divisors, whose sum is σ = 23802139092. Its totient is φ = 23802139090.

The previous prime is 23802139037. The next prime is 23802139147. The reversal of 23802139091 is 19093120832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23802139091 - 2¹⁸ = 23801876947 is a prime.

It is not a weakly prime, because it can be changed into another prime (23802132091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11901069545 + 11901069546.

It is an arithmetic number, because the mean of its divisors is an integer number (11901069546).

Almost surely, 2^23802139091 is an apocalyptic number.

23802139091 is a deficient number, since it is larger than the sum of its proper divisors (1).

23802139091 is an equidigital number, since it uses as much as digits as its factorization.

23802139091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 23802139091 in words is "twenty-three billion, eight hundred two million, one hundred thirty-nine thousand, ninety-one".