508142587621 has 4 divisors (see below), whose sum is σ = 508232418732. Its totient is φ = 508052756512.

The previous prime is 508142587619. The next prime is 508142587649. The reversal of 508142587621 is 126785241805.

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

It can be written as a sum of positive squares in 2 ways, for example, as 168153304225 + 339989283396 = 410065^2 + 583086^2 .

It is a cyclic number.

It is not a de Polignac number, because 508142587621 - 2¹ = 508142587619 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 (508142587651) 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, 44907070 + ... + 44918383.

It is an arithmetic number, because the mean of its divisors is an integer number (127058104683).

Almost surely, 2^508142587621 is an apocalyptic number.

It is an amenable number.

508142587621 is a deficient number, since it is larger than the sum of its proper divisors (89831111).

508142587621 is an equidigital number, since it uses as much as digits as its factorization.

508142587621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89831110.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 508142587621 in words is "five hundred eight billion, one hundred forty-two million, five hundred eighty-seven thousand, six hundred twenty-one".