53993784737 has 2 divisors, whose sum is σ = 53993784738. Its totient is φ = 53993784736.

The previous prime is 53993784703. The next prime is 53993784769. The reversal of 53993784737 is 73748739935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48803879056 + 5189905681 = 220916^2 + 72041^2 .

It is a cyclic number.

It is not a de Polignac number, because 53993784737 - 2¹⁰ = 53993783713 is a prime.

It is not a weakly prime, because it can be changed into another prime (53993784787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26996892368 + 26996892369.

It is an arithmetic number, because the mean of its divisors is an integer number (26996892369).

Almost surely, 2^53993784737 is an apocalyptic number.

It is an amenable number.

53993784737 is a deficient number, since it is larger than the sum of its proper divisors (1).

53993784737 is an equidigital number, since it uses as much as digits as its factorization.

53993784737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120022560, while the sum is 65.

The spelling of 53993784737 in words is "fifty-three billion, nine hundred ninety-three million, seven hundred eighty-four thousand, seven hundred thirty-seven".