20352152146637 has 2 divisors, whose sum is σ = 20352152146638. Its totient is φ = 20352152146636.

The previous prime is 20352152146621. The next prime is 20352152146663. The reversal of 20352152146637 is 73664125125302.

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., 16659409580836 + 3692742565801 = 4081594^2 + 1921651^2 .

It is a cyclic number.

It is not a de Polignac number, because 20352152146637 - 2⁴ = 20352152146621 is a prime.

It is a super-2 number, since 2×20352152146637² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20352152146591 and 20352152146600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20352158146637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10176076073318 + 10176076073319.

It is an arithmetic number, because the mean of its divisors is an integer number (10176076073319).

Almost surely, 2^{20352152146637} is an apocalyptic number.

It is an amenable number.

20352152146637 is a deficient number, since it is larger than the sum of its proper divisors (1).

20352152146637 is an equidigital number, since it uses as much as digits as its factorization.

20352152146637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 20352152146637 in words is "twenty trillion, three hundred fifty-two billion, one hundred fifty-two million, one hundred forty-six thousand, six hundred thirty-seven".