54780535831 has 16 divisors (see below), whose sum is σ = 64931310400. Its totient is φ = 46184977440.

The previous prime is 54780535819. The next prime is 54780535933. The reversal of 54780535831 is 13853508745.

It is not a de Polignac number, because 54780535831 - 2¹⁹ = 54780011543 is a prime.

It is a super-2 number, since 2×54780535831² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54780535331) 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, 1288176 + ... + 1330021.

It is an arithmetic number, because the mean of its divisors is an integer number (4058206900).

Almost surely, 2^54780535831 is an apocalyptic number.

54780535831 is a deficient number, since it is larger than the sum of its proper divisors (10150774569).

54780535831 is an equidigital number, since it uses as much as digits as its factorization.

54780535831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618279 (or 2618265 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 54780535831 in words is "fifty-four billion, seven hundred eighty million, five hundred thirty-five thousand, eight hundred thirty-one".