32420202139981 has 2 divisors, whose sum is σ = 32420202139982. Its totient is φ = 32420202139980.

The previous prime is 32420202139883. The next prime is 32420202139991. The reversal of 32420202139981 is 18993120202423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19562663620900 + 12857538519081 = 4422970^2 + 3585741^2 .

It is a cyclic number.

It is not a de Polignac number, because 32420202139981 - 2¹³ = 32420202131789 is a prime.

It is a super-2 number, since 2×32420202139981² (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 (32420202139991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16210101069990 + 16210101069991.

It is an arithmetic number, because the mean of its divisors is an integer number (16210101069991).

Almost surely, 2^{32420202139981} is an apocalyptic number.

It is an amenable number.

32420202139981 is a deficient number, since it is larger than the sum of its proper divisors (1).

32420202139981 is an equidigital number, since it uses as much as digits as its factorization.

32420202139981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 32420202139981 in words is "thirty-two trillion, four hundred twenty billion, two hundred two million, one hundred thirty-nine thousand, nine hundred eighty-one".