1353421621530 has 144 divisors (see below), whose sum is σ = 3912600627936. Its totient is φ = 321910942080.

The previous prime is 1353421621493. The next prime is 1353421621561. The reversal of 1353421621530 is 351261243531.

1353421621530 is a `hidden beast` number, since 1 + 3 + 5 + 3 + 4 + 21 + 621 + 5 + 3 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2537569 + ... + 3024251.

It is an arithmetic number, because the mean of its divisors is an integer number (27170837694).

Almost surely, 2^{1353421621530} is an apocalyptic number.

1353421621530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1353421621530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956300313968).

1353421621530 is an abundant number, since it is smaller than the sum of its proper divisors (2559179006406).

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

1353421621530 is a wasteful number, since it uses less digits than its factorization.

1353421621530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486813 (or 486757 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 1353421621530 in words is "one trillion, three hundred fifty-three billion, four hundred twenty-one million, six hundred twenty-one thousand, five hundred thirty".