51277525669 has 16 divisors (see below), whose sum is σ = 51935113152. Its totient is φ = 50624034048.

The previous prime is 51277525667. The next prime is 51277525693. The reversal of 51277525669 is 96652577215.

51277525669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51277525669 - 2¹ = 51277525667 is a prime.

It is a super-2 number, since 2×51277525669² (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 (51277525667) 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, 58071502 + ... + 58072384.

It is an arithmetic number, because the mean of its divisors is an integer number (3245944572).

Almost surely, 2^51277525669 is an apocalyptic number.

It is an amenable number.

51277525669 is a deficient number, since it is larger than the sum of its proper divisors (657587483).

51277525669 is a wasteful number, since it uses less digits than its factorization.

51277525669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436.

The product of its digits is 7938000, while the sum is 55.

The spelling of 51277525669 in words is "fifty-one billion, two hundred seventy-seven million, five hundred twenty-five thousand, six hundred sixty-nine".