546640205365426 has 4 divisors (see below), whose sum is σ = 819960308048142. Its totient is φ = 273320102682712.

The previous prime is 546640205365421. The next prime is 546640205365453. The reversal of 546640205365426 is 624563502046645.

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

It can be written as a sum of positive squares in only one way, i.e., 412321493101401 + 134318712264025 = 20305701^2 + 11589595^2 .

It is a super-2 number, since 2×546640205365426² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (546640205365421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136660051341355 + ... + 136660051341358.

Almost surely, 2^{546640205365426} is an apocalyptic number.

546640205365426 is a deficient number, since it is larger than the sum of its proper divisors (273320102682716).

546640205365426 is a wasteful number, since it uses less digits than its factorization.

546640205365426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273320102682715.

The product of its (nonzero) digits is 124416000, while the sum is 58.

The spelling of 546640205365426 in words is "five hundred forty-six trillion, six hundred forty billion, two hundred five million, three hundred sixty-five thousand, four hundred twenty-six".