54166777647 has 32 divisors (see below), whose sum is σ = 75930048000. Its totient is φ = 34281848832.

The previous prime is 54166777619. The next prime is 54166777649. The reversal of 54166777647 is 74677766145.

It is a happy number.

It is not a de Polignac number, because 54166777647 - 2⁶ = 54166777583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54166777649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5974804 + ... + 5983862.

It is an arithmetic number, because the mean of its divisors is an integer number (2372814000).

Almost surely, 2^54166777647 is an apocalyptic number.

54166777647 is a deficient number, since it is larger than the sum of its proper divisors (21763270353).

54166777647 is a wasteful number, since it uses less digits than its factorization.

54166777647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9727.

The product of its digits is 41489280, while the sum is 60.

The spelling of 54166777647 in words is "fifty-four billion, one hundred sixty-six million, seven hundred seventy-seven thousand, six hundred forty-seven".