57744647077 has 4 divisors (see below), whose sum is σ = 62186543020. Its totient is φ = 53302751136.

The previous prime is 57744647071. The next prime is 57744647101. The reversal of 57744647077 is 77074644775.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22340085156 + 35404561921 = 149466^2 + 188161^2 .

It is a cyclic number.

It is not a de Polignac number, because 57744647077 - 2¹¹ = 57744645029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57744647071) 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, 2220947952 + ... + 2220947977.

It is an arithmetic number, because the mean of its divisors is an integer number (15546635755).

Almost surely, 2^57744647077 is an apocalyptic number.

It is an amenable number.

57744647077 is a deficient number, since it is larger than the sum of its proper divisors (4441895943).

57744647077 is a wasteful number, since it uses less digits than its factorization.

57744647077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441895942.

The product of its (nonzero) digits is 32269440, while the sum is 58.

The spelling of 57744647077 in words is "fifty-seven billion, seven hundred forty-four million, six hundred forty-seven thousand, seventy-seven".