55821762359999 has 2 divisors, whose sum is σ = 55821762360000. Its totient is φ = 55821762359998.

The previous prime is 55821762359939. The next prime is 55821762360071. The reversal of 55821762359999 is 99995326712855.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55821762359999 - 2⁸ = 55821762359743 is a prime.

It is a super-2 number, since 2×55821762359999² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55821762359929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27910881179999 + 27910881180000.

It is an arithmetic number, because the mean of its divisors is an integer number (27910881180000).

Almost surely, 2^{55821762359999} is an apocalyptic number.

55821762359999 is a deficient number, since it is larger than the sum of its proper divisors (1).

55821762359999 is an equidigital number, since it uses as much as digits as its factorization.

55821762359999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3306744000, while the sum is 80.

The spelling of 55821762359999 in words is "fifty-five trillion, eight hundred twenty-one billion, seven hundred sixty-two million, three hundred fifty-nine thousand, nine hundred ninety-nine".