51132126277 has 4 divisors (see below), whose sum is σ = 51133263660. Its totient is φ = 51130988896.

The previous prime is 51132126233. The next prime is 51132126391. The reversal of 51132126277 is 77262123115.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18322600321 + 32809525956 = 135361^2 + 181134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51132126277 is a prime.

It is a super-2 number, since 2×51132126277² (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 (51132126977) 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, 498358 + ... + 592135.

It is an arithmetic number, because the mean of its divisors is an integer number (12783315915).

Almost surely, 2^51132126277 is an apocalyptic number.

It is an amenable number.

51132126277 is a deficient number, since it is larger than the sum of its proper divisors (1137383).

51132126277 is a wasteful number, since it uses less digits than its factorization.

51132126277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137382.

The product of its digits is 35280, while the sum is 37.

The spelling of 51132126277 in words is "fifty-one billion, one hundred thirty-two million, one hundred twenty-six thousand, two hundred seventy-seven".