51313216377 has 16 divisors (see below), whose sum is σ = 69821136000. Its totient is φ = 33514107264.

The previous prime is 51313216363. The next prime is 51313216387. The reversal of 51313216377 is 77361231315.

It is a happy number.

It is not a de Polignac number, because 51313216377 - 2⁷ = 51313216249 is a prime.

It is a super-2 number, since 2×51313216377² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51313216387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852477 + ... + 910682.

It is an arithmetic number, because the mean of its divisors is an integer number (4363821000).

Almost surely, 2^51313216377 is an apocalyptic number.

It is an amenable number.

51313216377 is a deficient number, since it is larger than the sum of its proper divisors (18507919623).

51313216377 is a wasteful number, since it uses less digits than its factorization.

51313216377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763360.

The product of its digits is 79380, while the sum is 39.

The spelling of 51313216377 in words is "fifty-one billion, three hundred thirteen million, two hundred sixteen thousand, three hundred seventy-seven".