66100050053539 has 2 divisors, whose sum is σ = 66100050053540. Its totient is φ = 66100050053538.

The previous prime is 66100050053533. The next prime is 66100050053563. The reversal of 66100050053539 is 93535005000166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66100050053539 - 2³¹ = 66097902569891 is a prime.

It is a super-2 number, since 2×66100050053539² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66100050053495 and 66100050053504.

It is not a weakly prime, because it can be changed into another prime (66100050053533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33050025026769 + 33050025026770.

It is an arithmetic number, because the mean of its divisors is an integer number (33050025026770).

Almost surely, 2^{66100050053539} is an apocalyptic number.

66100050053539 is a deficient number, since it is larger than the sum of its proper divisors (1).

66100050053539 is an equidigital number, since it uses as much as digits as its factorization.

66100050053539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 364500, while the sum is 43.

The spelling of 66100050053539 in words is "sixty-six trillion, one hundred billion, fifty million, fifty-three thousand, five hundred thirty-nine".