427516475497 has 4 divisors (see below), whose sum is σ = 427923247696. Its totient is φ = 427109703300.

The previous prime is 427516475467. The next prime is 427516475501. The reversal of 427516475497 is 794574615724.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427516475497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427516475417) 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, 203384523 + ... + 203386624.

It is an arithmetic number, because the mean of its divisors is an integer number (106980811924).

Almost surely, 2^427516475497 is an apocalyptic number.

It is an amenable number.

427516475497 is a deficient number, since it is larger than the sum of its proper divisors (406772199).

427516475497 is a wasteful number, since it uses less digits than its factorization.

427516475497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406772198.

The product of its digits is 59270400, while the sum is 61.

The spelling of 427516475497 in words is "four hundred twenty-seven billion, five hundred sixteen million, four hundred seventy-five thousand, four hundred ninety-seven".