5205978737 has 2 divisors, whose sum is σ = 5205978738. Its totient is φ = 5205978736.

The previous prime is 5205978733. The next prime is 5205978781. The reversal of 5205978737 is 7378795025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4828026256 + 377952481 = 69484^2 + 19441^2 .

It is a cyclic number.

It is not a de Polignac number, because 5205978737 - 2² = 5205978733 is a prime.

It is a super-2 number, since 2×5205978737² = 54204429220192230338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5205978733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602989368 + 2602989369.

It is an arithmetic number, because the mean of its divisors is an integer number (2602989369).

Almost surely, 2^5205978737 is an apocalyptic number.

It is an amenable number.

5205978737 is a deficient number, since it is larger than the sum of its proper divisors (1).

5205978737 is an equidigital number, since it uses as much as digits as its factorization.

5205978737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3704400, while the sum is 53.

The square root of 5205978737 is about 72152.4686826445. The cubic root of 5205978737 is about 1733.1419327570.

The spelling of 5205978737 in words is "five billion, two hundred five million, nine hundred seventy-eight thousand, seven hundred thirty-seven".