53929246681 has 2 divisors, whose sum is σ = 53929246682. Its totient is φ = 53929246680.

The previous prime is 53929246673. The next prime is 53929246729. The reversal of 53929246681 is 18664292935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41744619225 + 12184627456 = 204315^2 + 110384^2 .

It is a cyclic number.

It is not a de Polignac number, because 53929246681 - 2³ = 53929246673 is a prime.

It is a super-2 number, since 2×53929246681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53929246601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26964623340 + 26964623341.

It is an arithmetic number, because the mean of its divisors is an integer number (26964623341).

Almost surely, 2^53929246681 is an apocalyptic number.

It is an amenable number.

53929246681 is a deficient number, since it is larger than the sum of its proper divisors (1).

53929246681 is an equidigital number, since it uses as much as digits as its factorization.

53929246681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 55.

The spelling of 53929246681 in words is "fifty-three billion, nine hundred twenty-nine million, two hundred forty-six thousand, six hundred eighty-one".