51282359947 has 16 divisors (see below), whose sum is σ = 64656188352. Its totient is φ = 39585415680.

The previous prime is 51282359939. The next prime is 51282359951. The reversal of 51282359947 is 74995328215.

It is a cyclic number.

It is not a de Polignac number, because 51282359947 - 2³ = 51282359939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51282359957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6868738 + ... + 6876199.

It is an arithmetic number, because the mean of its divisors is an integer number (4041011772).

Almost surely, 2^51282359947 is an apocalyptic number.

51282359947 is a deficient number, since it is larger than the sum of its proper divisors (13373828405).

51282359947 is a wasteful number, since it uses less digits than its factorization.

51282359947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13744998.

The product of its digits is 5443200, while the sum is 55.

The spelling of 51282359947 in words is "fifty-one billion, two hundred eighty-two million, three hundred fifty-nine thousand, nine hundred forty-seven".