1345404053520 has 160 divisors (see below), whose sum is σ = 4732769226240. Its totient is φ = 351140889600.

The previous prime is 1345404053519. The next prime is 1345404053561. The reversal of 1345404053520 is 253504045431.

1345404053520 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 40 + 40 + 53 + 520 = 666.

It is a super-2 number, since 2×1345404053520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6524781 + ... + 6727820.

It is an arithmetic number, because the mean of its divisors is an integer number (29579807664).

Almost surely, 2^{1345404053520} is an apocalyptic number.

1345404053520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345404053520 is an abundant number, since it is smaller than the sum of its proper divisors (3387365172720).

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

1345404053520 is a wasteful number, since it uses less digits than its factorization.

1345404053520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13252670 (or 13252658 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 1345404053520 its reverse (253504045431), we get a palindrome (1598908098951).

The spelling of 1345404053520 in words is "one trillion, three hundred forty-five billion, four hundred four million, fifty-three thousand, five hundred twenty".