51283038215 has 4 divisors (see below), whose sum is σ = 61539645864. Its totient is φ = 41026430568.

The previous prime is 51283038211. The next prime is 51283038221.

51283038215 is nontrivially palindromic in base 10.

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 51283038215 - 2² = 51283038211 is a prime.

It is a super-2 number, since 2×51283038215² (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 (51283038211) 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, 5128303817 + ... + 5128303826.

It is an arithmetic number, because the mean of its divisors is an integer number (15384911466).

Almost surely, 2^51283038215 is an apocalyptic number.

51283038215 is a deficient number, since it is larger than the sum of its proper divisors (10256607649).

51283038215 is a wasteful number, since it uses less digits than its factorization.

51283038215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256607648.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 51283038215 in words is "fifty-one billion, two hundred eighty-three million, thirty-eight thousand, two hundred fifteen".