51127203154 has 4 divisors (see below), whose sum is σ = 76690804734. Its totient is φ = 25563601576.

The previous prime is 51127203133. The next prime is 51127203187. The reversal of 51127203154 is 45130272115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51118949025 + 8254129 = 226095^2 + 2873^2 .

It is a super-2 number, since 2×51127203154² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12781800787 + ... + 12781800790.

Almost surely, 2^51127203154 is an apocalyptic number.

51127203154 is a deficient number, since it is larger than the sum of its proper divisors (25563601580).

51127203154 is a wasteful number, since it uses less digits than its factorization.

51127203154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25563601579.

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 51127203154 its reverse (45130272115), we get a palindrome (96257475269).

The spelling of 51127203154 in words is "fifty-one billion, one hundred twenty-seven million, two hundred three thousand, one hundred fifty-four".