51040587658340 has 96 divisors (see below), whose sum is σ = 128949974092800. Its totient is φ = 16577911405440.

The previous prime is 51040587658339. The next prime is 51040587658343. The reversal of 51040587658340 is 4385678504015.

It is not an unprimeable number, because it can be changed into a prime (51040587658343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66038651 + ... + 66807069.

It is an arithmetic number, because the mean of its divisors is an integer number (1343228896800).

Almost surely, 2^{51040587658340} is an apocalyptic number.

It is an amenable number.

51040587658340 is an abundant number, since it is smaller than the sum of its proper divisors (77909386434460).

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

51040587658340 is a wasteful number, since it uses less digits than its factorization.

51040587658340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793425 (or 793423 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 51040587658340 in words is "fifty-one trillion, forty billion, five hundred eighty-seven million, six hundred fifty-eight thousand, three hundred forty".