427069720461 has 4 divisors (see below), whose sum is σ = 569426293952. Its totient is φ = 284713146972.

The previous prime is 427069720457. The next prime is 427069720463. The reversal of 427069720461 is 164027960724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 427069720461 - 2² = 427069720457 is a prime.

It is a super-2 number, since 2×427069720461² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427069720461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427069720463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71178286741 + ... + 71178286746.

It is an arithmetic number, because the mean of its divisors is an integer number (142356573488).

Almost surely, 2^427069720461 is an apocalyptic number.

It is an amenable number.

427069720461 is a deficient number, since it is larger than the sum of its proper divisors (142356573491).

427069720461 is a wasteful number, since it uses less digits than its factorization.

427069720461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142356573490.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 427069720461 in words is "four hundred twenty-seven billion, sixty-nine million, seven hundred twenty thousand, four hundred sixty-one".