20602241993 has 2 divisors, whose sum is σ = 20602241994. Its totient is φ = 20602241992.

The previous prime is 20602241977. The next prime is 20602242041. The reversal of 20602241993 is 39914220602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17635043209 + 2967198784 = 132797^2 + 54472^2 .

It is a cyclic number.

It is not a de Polignac number, because 20602241993 - 2⁴ = 20602241977 is a prime.

It is a super-2 number, since 2×20602241993² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20602241923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10301120996 + 10301120997.

It is an arithmetic number, because the mean of its divisors is an integer number (10301120997).

Almost surely, 2^20602241993 is an apocalyptic number.

It is an amenable number.

20602241993 is a deficient number, since it is larger than the sum of its proper divisors (1).

20602241993 is an equidigital number, since it uses as much as digits as its factorization.

20602241993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 20602241993 in words is "twenty billion, six hundred two million, two hundred forty-one thousand, nine hundred ninety-three".