39495856823 has 2 divisors, whose sum is σ = 39495856824. Its totient is φ = 39495856822.

The previous prime is 39495856801. The next prime is 39495856837. The reversal of 39495856823 is 32865859493.

39495856823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (32865859493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39495856823 - 2²⁰ = 39494808247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39495856853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19747928411 + 19747928412.

It is an arithmetic number, because the mean of its divisors is an integer number (19747928412).

Almost surely, 2^39495856823 is an apocalyptic number.

39495856823 is a deficient number, since it is larger than the sum of its proper divisors (1).

39495856823 is an equidigital number, since it uses as much as digits as its factorization.

39495856823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55987200, while the sum is 62.

The spelling of 39495856823 in words is "thirty-nine billion, four hundred ninety-five million, eight hundred fifty-six thousand, eight hundred twenty-three".