55726348861 has 4 divisors (see below), whose sum is σ = 55731310492. Its totient is φ = 55721387232.

The previous prime is 55726348787. The next prime is 55726348879. The reversal of 55726348861 is 16884362755.

It is a happy number.

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 49999643236 + 5726705625 = 223606^2 + 75675^2 .

It is a cyclic number.

It is not a de Polignac number, because 55726348861 - 2¹³ = 55726340669 is a prime.

It is a super-3 number, since 3×55726348861³ (a number of 33 digits) contains 333 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 (55726345861) 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, 2463930 + ... + 2486443.

It is an arithmetic number, because the mean of its divisors is an integer number (13932827623).

Almost surely, 2^55726348861 is an apocalyptic number.

It is an amenable number.

55726348861 is a deficient number, since it is larger than the sum of its proper divisors (4961631).

55726348861 is a wasteful number, since it uses less digits than its factorization.

55726348861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961630.

The product of its digits is 9676800, while the sum is 55.

The spelling of 55726348861 in words is "fifty-five billion, seven hundred twenty-six million, three hundred forty-eight thousand, eight hundred sixty-one".