427540606045723 has 4 divisors (see below), whose sum is σ = 437483410837528. Its totient is φ = 417597801253920.

The previous prime is 427540606045621. The next prime is 427540606045753. The reversal of 427540606045723 is 327540606045724.

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

It is a cyclic number.

It is not a de Polignac number, because 427540606045723 - 2²¹ = 427540603948571 is a prime.

It is a super-2 number, since 2×427540606045723² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427540606045753) 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, 4971402395838 + ... + 4971402395923.

It is an arithmetic number, because the mean of its divisors is an integer number (109370852709382).

Almost surely, 2^{427540606045723} is an apocalyptic number.

427540606045723 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

427540606045723 is a deficient number, since it is larger than the sum of its proper divisors (9942804791805).

427540606045723 is an equidigital number, since it uses as much as digits as its factorization.

427540606045723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9942804791804.

The product of its (nonzero) digits is 33868800, while the sum is 55.

Subtracting from 427540606045723 its reverse (327540606045724), we obtain a palindrome (99999999999999).

The spelling of 427540606045723 in words is "four hundred twenty-seven trillion, five hundred forty billion, six hundred six million, forty-five thousand, seven hundred twenty-three".