56734742279 has 4 divisors (see below), whose sum is σ = 56753650560. Its totient is φ = 56715834000.

The previous prime is 56734742249. The next prime is 56734742291. The reversal of 56734742279 is 97224743765.

It is a happy number.

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-56734742279 is a prime.

It is a super-2 number, since 2×56734742279² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56734742249) 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, 9449639 + ... + 9455640.

It is an arithmetic number, because the mean of its divisors is an integer number (14188412640).

Almost surely, 2^56734742279 is an apocalyptic number.

56734742279 is a deficient number, since it is larger than the sum of its proper divisors (18908281).

56734742279 is a wasteful number, since it uses less digits than its factorization.

56734742279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18908280.

The product of its digits is 17781120, while the sum is 56.

The spelling of 56734742279 in words is "fifty-six billion, seven hundred thirty-four million, seven hundred forty-two thousand, two hundred seventy-nine".