51050218497 has 4 divisors (see below), whose sum is σ = 68066958000. Its totient is φ = 34033478996.

The previous prime is 51050218451. The next prime is 51050218543. The reversal of 51050218497 is 79481205015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (51050218451) and next prime (51050218543).

It is a cyclic number.

It is not a de Polignac number, because 51050218497 - 2²³ = 51041829889 is a prime.

It is a super-2 number, since 2×51050218497² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51050218097) 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, 8508369747 + ... + 8508369752.

It is an arithmetic number, because the mean of its divisors is an integer number (17016739500).

Almost surely, 2^51050218497 is an apocalyptic number.

It is an amenable number.

51050218497 is a deficient number, since it is larger than the sum of its proper divisors (17016739503).

51050218497 is a wasteful number, since it uses less digits than its factorization.

51050218497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016739502.

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 51050218497 in words is "fifty-one billion, fifty million, two hundred eighteen thousand, four hundred ninety-seven".