51854788377 has 24 divisors (see below), whose sum is σ = 85956773760. Its totient is φ = 29508347520.

The previous prime is 51854788331. The next prime is 51854788387. The reversal of 51854788377 is 77388745815.

51854788377 is a `hidden beast` number, since 5 + 1 + 8 + 547 + 8 + 83 + 7 + 7 = 666.

It is not a de Polignac number, because 51854788377 - 2⁶ = 51854788313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (51854788387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1692477 + ... + 1722842.

It is an arithmetic number, because the mean of its divisors is an integer number (3581532240).

Almost surely, 2^51854788377 is an apocalyptic number.

It is an amenable number.

51854788377 is a deficient number, since it is larger than the sum of its proper divisors (34101985383).

51854788377 is a wasteful number, since it uses less digits than its factorization.

51854788377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415573 (or 3415570 counting only the distinct ones).

The product of its digits is 52684800, while the sum is 63.

The spelling of 51854788377 in words is "fifty-one billion, eight hundred fifty-four million, seven hundred eighty-eight thousand, three hundred seventy-seven".