51481751014 has 4 divisors (see below), whose sum is σ = 77222626524. Its totient is φ = 25740875506.

The previous prime is 51481751011. The next prime is 51481751039. The reversal of 51481751014 is 41015718415.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51481751011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12870437752 + ... + 12870437755.

It is an arithmetic number, because the mean of its divisors is an integer number (19305656631).

Almost surely, 2^51481751014 is an apocalyptic number.

51481751014 is a deficient number, since it is larger than the sum of its proper divisors (25740875510).

51481751014 is a wasteful number, since it uses less digits than its factorization.

51481751014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25740875509.

The product of its (nonzero) digits is 22400, while the sum is 37.

The spelling of 51481751014 in words is "fifty-one billion, four hundred eighty-one million, seven hundred fifty-one thousand, fourteen".