53857337669 has 2 divisors, whose sum is σ = 53857337670. Its totient is φ = 53857337668.

The previous prime is 53857337587. The next prime is 53857337693. The reversal of 53857337669 is 96673375835.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45161775169 + 8695562500 = 212513^2 + 93250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53857337669 is a prime.

It is a super-2 number, since 2×53857337669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53857331669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26928668834 + 26928668835.

It is an arithmetic number, because the mean of its divisors is an integer number (26928668835).

Almost surely, 2^53857337669 is an apocalyptic number.

It is an amenable number.

53857337669 is a deficient number, since it is larger than the sum of its proper divisors (1).

53857337669 is an equidigital number, since it uses as much as digits as its factorization.

53857337669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85730400, while the sum is 62.

The spelling of 53857337669 in words is "fifty-three billion, eight hundred fifty-seven million, three hundred thirty-seven thousand, six hundred sixty-nine".