49521821983 has 2 divisors, whose sum is σ = 49521821984. Its totient is φ = 49521821982.

The previous prime is 49521821981. The next prime is 49521822029. The reversal of 49521821983 is 38912812594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49521821983 - 2¹ = 49521821981 is a prime.

Together with 49521821981, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 49521821983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49521821981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24760910991 + 24760910992.

It is an arithmetic number, because the mean of its divisors is an integer number (24760910992).

Almost surely, 2^49521821983 is an apocalyptic number.

49521821983 is a deficient number, since it is larger than the sum of its proper divisors (1).

49521821983 is an equidigital number, since it uses as much as digits as its factorization.

49521821983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 52.

The spelling of 49521821983 in words is "forty-nine billion, five hundred twenty-one million, eight hundred twenty-one thousand, nine hundred eighty-three".