54847819691 has 6 divisors (see below), whose sum is σ = 63802565820. Its totient is φ = 47012416836.

The previous prime is 54847819679. The next prime is 54847819723. The reversal of 54847819691 is 19691874845.

It is a de Polignac number, because none of the positive numbers 2^k-54847819691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54847819991) 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, 559671581 + ... + 559671678.

It is an arithmetic number, because the mean of its divisors is an integer number (10633760970).

Almost surely, 2^54847819691 is an apocalyptic number.

54847819691 is a deficient number, since it is larger than the sum of its proper divisors (8954746129).

54847819691 is a wasteful number, since it uses less digits than its factorization.

54847819691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119343273 (or 1119343266 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 62.

The spelling of 54847819691 in words is "fifty-four billion, eight hundred forty-seven million, eight hundred nineteen thousand, six hundred ninety-one".