54781591379 has 4 divisors (see below), whose sum is σ = 56548739520. Its totient is φ = 53014443240.

The previous prime is 54781591373. The next prime is 54781591439. The reversal of 54781591379 is 97319518745.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54781591379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54781591373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 883574024 + ... + 883574085.

It is an arithmetic number, because the mean of its divisors is an integer number (14137184880).

Almost surely, 2^54781591379 is an apocalyptic number.

54781591379 is a deficient number, since it is larger than the sum of its proper divisors (1767148141).

54781591379 is a wasteful number, since it uses less digits than its factorization.

54781591379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767148140.

The product of its digits is 9525600, while the sum is 59.

The spelling of 54781591379 in words is "fifty-four billion, seven hundred eighty-one million, five hundred ninety-one thousand, three hundred seventy-nine".