51077247340 has 96 divisors (see below), whose sum is σ = 126636023808. Its totient is φ = 16934400000.

The previous prime is 51077247317. The next prime is 51077247341. The reversal of 51077247340 is 4374277015.

It is a junction number, because it is equal to n+sod(n) for n = 51077247293 and 51077247302.

It is not an unprimeable number, because it can be changed into a prime (51077247341) 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 31 ways as a sum of consecutive naturals, for example, 6944665 + ... + 6952015.

It is an arithmetic number, because the mean of its divisors is an integer number (1319125248).

Almost surely, 2^51077247340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51077247340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63318011904).

51077247340 is an abundant number, since it is smaller than the sum of its proper divisors (75558776468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51077247340 is a wasteful number, since it uses less digits than its factorization.

51077247340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8999 (or 8997 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 40.

The spelling of 51077247340 in words is "fifty-one billion, seventy-seven million, two hundred forty-seven thousand, three hundred forty".