53219865971 has 2 divisors, whose sum is σ = 53219865972. Its totient is φ = 53219865970.

The previous prime is 53219865961. The next prime is 53219865977. The reversal of 53219865971 is 17956891235.

It is a happy number.

53219865971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53219865971 - 2²² = 53215671667 is a prime.

It is not a weakly prime, because it can be changed into another prime (53219865977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26609932985 + 26609932986.

It is an arithmetic number, because the mean of its divisors is an integer number (26609932986).

Almost surely, 2^53219865971 is an apocalyptic number.

53219865971 is a deficient number, since it is larger than the sum of its proper divisors (1).

53219865971 is an equidigital number, since it uses as much as digits as its factorization.

53219865971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 56.

The spelling of 53219865971 in words is "fifty-three billion, two hundred nineteen million, eight hundred sixty-five thousand, nine hundred seventy-one".