1356451420560 has 320 divisors, whose sum is σ = 4435785234432. Its totient is φ = 342222082048.

The previous prime is 1356451420543. The next prime is 1356451420619. The reversal of 1356451420560 is 650241546531.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 488457892 + ... + 488460668.

Almost surely, 2^{1356451420560} is an apocalyptic number.

1356451420560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356451420560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2217892617216).

1356451420560 is an abundant number, since it is smaller than the sum of its proper divisors (3079333813872).

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

1356451420560 is a wasteful number, since it uses less digits than its factorization.

1356451420560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750 (or 3744 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 1356451420560 in words is "one trillion, three hundred fifty-six billion, four hundred fifty-one million, four hundred twenty thousand, five hundred sixty".