53021319887 has 2 divisors, whose sum is σ = 53021319888. Its totient is φ = 53021319886.

The previous prime is 53021319829. The next prime is 53021319947. The reversal of 53021319887 is 78891312035.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53021319887 - 2¹⁸ = 53021057743 is a prime.

It is a super-2 number, since 2×53021319887² (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 (53021319487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26510659943 + 26510659944.

It is an arithmetic number, because the mean of its divisors is an integer number (26510659944).

Almost surely, 2^53021319887 is an apocalyptic number.

53021319887 is a deficient number, since it is larger than the sum of its proper divisors (1).

53021319887 is an equidigital number, since it uses as much as digits as its factorization.

53021319887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 53021319887 in words is "fifty-three billion, twenty-one million, three hundred nineteen thousand, eight hundred eighty-seven".