51140662061 has 8 divisors (see below), whose sum is σ = 52397548224. Its totient is φ = 49884230880.

The previous prime is 51140662043. The next prime is 51140662123. The reversal of 51140662061 is 16026604115.

51140662061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51140662061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51140662861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119630 + ... + 341456.

It is an arithmetic number, because the mean of its divisors is an integer number (6549693528).

Almost surely, 2^51140662061 is an apocalyptic number.

It is an amenable number.

51140662061 is a deficient number, since it is larger than the sum of its proper divisors (1256886163).

51140662061 is a wasteful number, since it uses less digits than its factorization.

51140662061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227491.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 51140662061 in words is "fifty-one billion, one hundred forty million, six hundred sixty-two thousand, sixty-one".