51444121415 has 16 divisors (see below), whose sum is σ = 61984267200. Its totient is φ = 40988040192.

The previous prime is 51444121411. The next prime is 51444121451. The reversal of 51444121415 is 51412144415.

It is a cyclic number.

It is not a de Polignac number, because 51444121415 - 2² = 51444121411 is a prime.

It is a super-2 number, since 2×51444121415² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51444121411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1445606 + ... + 1480764.

It is an arithmetic number, because the mean of its divisors is an integer number (3874016700).

Almost surely, 2^51444121415 is an apocalyptic number.

51444121415 is a deficient number, since it is larger than the sum of its proper divisors (10540145785).

51444121415 is a wasteful number, since it uses less digits than its factorization.

51444121415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36346.

The product of its digits is 12800, while the sum is 32.

The spelling of 51444121415 in words is "fifty-one billion, four hundred forty-four million, one hundred twenty-one thousand, four hundred fifteen".