102826036421 has 2 divisors, whose sum is σ = 102826036422. Its totient is φ = 102826036420.

The previous prime is 102826036381. The next prime is 102826036429. The reversal of 102826036421 is 124630628201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90008400196 + 12817636225 = 300014^2 + 113215^2 .

It is a cyclic number.

It is not a de Polignac number, because 102826036421 - 2³⁰ = 101752294597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102826036429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51413018210 + 51413018211.

It is an arithmetic number, because the mean of its divisors is an integer number (51413018211).

Almost surely, 2^102826036421 is an apocalyptic number.

It is an amenable number.

102826036421 is a deficient number, since it is larger than the sum of its proper divisors (1).

102826036421 is an equidigital number, since it uses as much as digits as its factorization.

102826036421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 102826036421 in words is "one hundred two billion, eight hundred twenty-six million, thirty-six thousand, four hundred twenty-one".