51381088546 has 8 divisors (see below), whose sum is σ = 79729275420. Its totient is φ = 24804663408.

The previous prime is 51381088537. The next prime is 51381088607. The reversal of 51381088546 is 64588018315.

51381088546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 51281867025 + 99221521 = 226455^2 + 9961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51381088546.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442940361 + ... + 442940476.

Almost surely, 2^51381088546 is an apocalyptic number.

51381088546 is a deficient number, since it is larger than the sum of its proper divisors (28348186874).

51381088546 is a wasteful number, since it uses less digits than its factorization.

51381088546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885880868.

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 51381088546 in words is "fifty-one billion, three hundred eighty-one million, eighty-eight thousand, five hundred forty-six".