1645701436416 has 88 divisors (see below), whose sum is σ = 4644417666240. Its totient is φ = 516298473472.

The previous prime is 1645701436411. The next prime is 1645701436427. The reversal of 1645701436416 is 6146341075461.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645701436411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15703956 + ... + 15808403.

It is an arithmetic number, because the mean of its divisors is an integer number (52777473480).

Almost surely, 2^{1645701436416} is an apocalyptic number.

1645701436416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1645701436416 is an abundant number, since it is smaller than the sum of its proper divisors (2998716229824).

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

1645701436416 is a wasteful number, since it uses less digits than its factorization.

1645701436416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31512399 (or 31512381 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 1645701436416 in words is "one trillion, six hundred forty-five billion, seven hundred one million, four hundred thirty-six thousand, four hundred sixteen".