51568488007 has 4 divisors (see below), whose sum is σ = 54601928496. Its totient is φ = 48535047520.

The previous prime is 51568487983. The next prime is 51568488011. The reversal of 51568488007 is 70088486515.

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 51568488007 - 2¹¹ = 51568485959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51568488047) 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, 1516720219 + ... + 1516720252.

It is an arithmetic number, because the mean of its divisors is an integer number (13650482124).

Almost surely, 2^51568488007 is an apocalyptic number.

51568488007 is a deficient number, since it is larger than the sum of its proper divisors (3033440489).

51568488007 is a wasteful number, since it uses less digits than its factorization.

51568488007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033440488.

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 51568488007 in words is "fifty-one billion, five hundred sixty-eight million, four hundred eighty-eight thousand, seven".