51438883415 has 4 divisors (see below), whose sum is σ = 61726660104. Its totient is φ = 41151106728.

The previous prime is 51438883411. The next prime is 51438883417.

51438883415 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 51438883415 - 2² = 51438883411 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 (51438883411) 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, 5143888337 + ... + 5143888346.

It is an arithmetic number, because the mean of its divisors is an integer number (15431665026).

Almost surely, 2^51438883415 is an apocalyptic number.

51438883415 is a deficient number, since it is larger than the sum of its proper divisors (10287776689).

51438883415 is a wasteful number, since it uses less digits than its factorization.

51438883415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10287776688.

The product of its digits is 1843200, while the sum is 50.

The spelling of 51438883415 in words is "fifty-one billion, four hundred thirty-eight million, eight hundred eighty-three thousand, four hundred fifteen".