51535707007 has 4 divisors (see below), whose sum is σ = 51536581776. Its totient is φ = 51534832240.

The previous prime is 51535706993. The next prime is 51535707031. The reversal of 51535707007 is 70070753515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51535707007 - 2¹¹ = 51535704959 is a prime.

It is a super-2 number, since 2×51535707007² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51535707037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342094 + ... + 469147.

It is an arithmetic number, because the mean of its divisors is an integer number (12884145444).

Almost surely, 2^51535707007 is an apocalyptic number.

51535707007 is a deficient number, since it is larger than the sum of its proper divisors (874769).

51535707007 is an equidigital number, since it uses as much as digits as its factorization.

51535707007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874768.

The product of its (nonzero) digits is 128625, while the sum is 40.

The spelling of 51535707007 in words is "fifty-one billion, five hundred thirty-five million, seven hundred seven thousand, seven".