51120265778122 has 4 divisors (see below), whose sum is σ = 76680398667186. Its totient is φ = 25560132889060.

The previous prime is 51120265778119. The next prime is 51120265778149. The reversal of 51120265778122 is 22187756202115.

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., 34248701313121 + 16871564465001 = 5852239^2 + 4107501^2 .

It is a super-2 number, since 2×51120265778122² (a number of 28 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, 12780066444529 + ... + 12780066444532.

Almost surely, 2^{51120265778122} is an apocalyptic number.

51120265778122 is a deficient number, since it is larger than the sum of its proper divisors (25560132889064).

51120265778122 is a wasteful number, since it uses less digits than its factorization.

51120265778122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560132889063.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 51120265778122 in words is "fifty-one trillion, one hundred twenty billion, two hundred sixty-five million, seven hundred seventy-eight thousand, one hundred twenty-two".