1321813400058 has 32 divisors (see below), whose sum is σ = 2941182921600. Its totient is φ = 440031495168.

The previous prime is 1321813399997. The next prime is 1321813400081. The reversal of 1321813400058 is 8500043181231.

1321813400058 is a `hidden beast` number, since 132 + 181 + 340 + 0 + 0 + 5 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1321813399995 and 1321813400031.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15873966 + ... + 15957017.

It is an arithmetic number, because the mean of its divisors is an integer number (91911966300).

Almost surely, 2^{1321813400058} is an apocalyptic number.

1321813400058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1321813400058 is an abundant number, since it is smaller than the sum of its proper divisors (1619369521542).

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

1321813400058 is a wasteful number, since it uses less digits than its factorization.

1321813400058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31831763 (or 31831757 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

Adding to 1321813400058 its reverse (8500043181231), we get a palindrome (9821856581289).

The spelling of 1321813400058 in words is "one trillion, three hundred twenty-one billion, eight hundred thirteen million, four hundred thousand, fifty-eight".