503211321426 has 64 divisors (see below), whose sum is σ = 1112209781760. Its totient is φ = 150515672640.

The previous prime is 503211321377. The next prime is 503211321511. The reversal of 503211321426 is 624123112305.

It is a super-2 number, since 2×503211321426² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 503211321393 and 503211321402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1428571 + ... + 1745633.

It is an arithmetic number, because the mean of its divisors is an integer number (17378277840).

Almost surely, 2^503211321426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503211321426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556104890880).

503211321426 is an abundant number, since it is smaller than the sum of its proper divisors (608998460334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

503211321426 is a wasteful number, since it uses less digits than its factorization.

503211321426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317391.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 503211321426 in words is "five hundred three billion, two hundred eleven million, three hundred twenty-one thousand, four hundred twenty-six".