51710002981 has 12 divisors (see below), whose sum is σ = 63992769312. Its totient is φ = 40913408016.

The previous prime is 51710002951. The next prime is 51710002997. The reversal of 51710002981 is 18920001715.

It is a happy number.

It is not a de Polignac number, because 51710002981 - 2⁹ = 51710002469 is a prime.

It is a super-2 number, since 2×51710002981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51710002951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21854271 + ... + 21856636.

It is an arithmetic number, because the mean of its divisors is an integer number (5332730776).

Almost surely, 2^51710002981 is an apocalyptic number.

It is an amenable number.

51710002981 is a deficient number, since it is larger than the sum of its proper divisors (12282766331).

51710002981 is a wasteful number, since it uses less digits than its factorization.

51710002981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43710940 (or 43710927 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 34.

The spelling of 51710002981 in words is "fifty-one billion, seven hundred ten million, two thousand, nine hundred eighty-one".