1578416755456 has 36 divisors (see below), whose sum is σ = 3154220323632. Its totient is φ = 788318514176.

The previous prime is 1578416755441. The next prime is 1578416755499. The reversal of 1578416755456 is 6545576148751.

It is a happy number.

It is a super-2 number, since 2×1578416755456² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3248515 + ... + 3702658.

It is an arithmetic number, because the mean of its divisors is an integer number (87617231212).

Almost surely, 2^{1578416755456} is an apocalyptic number.

1578416755456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1578416755456 is a deficient number, since it is larger than the sum of its proper divisors (1575803568176).

1578416755456 is an frugal number, since it uses more digits than its factorization.

1578416755456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952076 (or 6952062 counting only the distinct ones).

The product of its digits is 141120000, while the sum is 64.

The spelling of 1578416755456 in words is "one trillion, five hundred seventy-eight billion, four hundred sixteen million, seven hundred fifty-five thousand, four hundred fifty-six".