15655539983 has 2 divisors, whose sum is σ = 15655539984. Its totient is φ = 15655539982.

The previous prime is 15655539979. The next prime is 15655539997. The reversal of 15655539983 is 38993555651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15655539983 - 2² = 15655539979 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15655599983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7827769991 + 7827769992.

It is an arithmetic number, because the mean of its divisors is an integer number (7827769992).

Almost surely, 2^15655539983 is an apocalyptic number.

15655539983 is a deficient number, since it is larger than the sum of its proper divisors (1).

15655539983 is an equidigital number, since it uses as much as digits as its factorization.

15655539983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870000, while the sum is 59.

The spelling of 15655539983 in words is "fifteen billion, six hundred fifty-five million, five hundred thirty-nine thousand, nine hundred eighty-three".