51275705742 has 12 divisors (see below), whose sum is σ = 111097362480. Its totient is φ = 17091901908.

The previous prime is 51275705693. The next prime is 51275705743. The reversal of 51275705742 is 24750757215.

51275705742 is a `hidden beast` number, since 5 + 1 + 2 + 7 + 5 + 70 + 574 + 2 = 666.

51275705742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51275705743) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1424325142 + ... + 1424325177.

It is an arithmetic number, because the mean of its divisors is an integer number (9258113540).

Almost surely, 2^51275705742 is an apocalyptic number.

51275705742 is an abundant number, since it is smaller than the sum of its proper divisors (59821656738).

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

51275705742 is a wasteful number, since it uses less digits than its factorization.

51275705742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848650327 (or 2848650324 counting only the distinct ones).

The product of its (nonzero) digits is 686000, while the sum is 45.

The spelling of 51275705742 in words is "fifty-one billion, two hundred seventy-five million, seven hundred five thousand, seven hundred forty-two".