84762499621 has 2 divisors, whose sum is σ = 84762499622. Its totient is φ = 84762499620.

The previous prime is 84762499561. The next prime is 84762499631. The reversal of 84762499621 is 12699426748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47225374596 + 37537125025 = 217314^2 + 193745^2 .

It is a cyclic number.

It is not a de Polignac number, because 84762499621 - 2¹⁷ = 84762368549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84762499631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42381249810 + 42381249811.

It is an arithmetic number, because the mean of its divisors is an integer number (42381249811).

Almost surely, 2^84762499621 is an apocalyptic number.

It is an amenable number.

84762499621 is a deficient number, since it is larger than the sum of its proper divisors (1).

84762499621 is an equidigital number, since it uses as much as digits as its factorization.

84762499621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 58.

The spelling of 84762499621 in words is "eighty-four billion, seven hundred sixty-two million, four hundred ninety-nine thousand, six hundred twenty-one".