420351431877527 has 4 divisors (see below), whose sum is σ = 423560221433976. Its totient is φ = 417142642321080.

The previous prime is 420351431877493. The next prime is 420351431877529. The reversal of 420351431877527 is 725778134153024.

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 420351431877527 - 2⁸ = 420351431877271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420351431877529) 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, 1604394778028 + ... + 1604394778289.

It is an arithmetic number, because the mean of its divisors is an integer number (105890055358494).

Almost surely, 2^{420351431877527} is an apocalyptic number.

420351431877527 is a deficient number, since it is larger than the sum of its proper divisors (3208789556449).

420351431877527 is a wasteful number, since it uses less digits than its factorization.

420351431877527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208789556448.

The product of its (nonzero) digits is 39513600, while the sum is 59.

The spelling of 420351431877527 in words is "four hundred twenty trillion, three hundred fifty-one billion, four hundred thirty-one million, eight hundred seventy-seven thousand, five hundred twenty-seven".