51303961007 has 4 divisors (see below), whose sum is σ = 55250419560. Its totient is φ = 47357502456.

The previous prime is 51303960989. The next prime is 51303961021. The reversal of 51303961007 is 70016930315.

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 51303961007 - 2¹⁴ = 51303944623 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 (51303961067) 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, 1973229257 + ... + 1973229282.

It is an arithmetic number, because the mean of its divisors is an integer number (13812604890).

Almost surely, 2^51303961007 is an apocalyptic number.

51303961007 is a deficient number, since it is larger than the sum of its proper divisors (3946458553).

51303961007 is a wasteful number, since it uses less digits than its factorization.

51303961007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946458552.

The product of its (nonzero) digits is 17010, while the sum is 35.

The spelling of 51303961007 in words is "fifty-one billion, three hundred three million, nine hundred sixty-one thousand, seven".