1612255121800 has 96 divisors (see below), whose sum is σ = 3930872459400. Its totient is φ = 614134241280.

The previous prime is 1612255121753. The next prime is 1612255121819. The reversal of 1612255121800 is 81215522161.

It can be written as a sum of positive squares in 12 ways, for example, as 380390430564 + 1231864691236 = 616758^2 + 1109894^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1480539 + ... + 2327338.

Almost surely, 2^{1612255121800} is an apocalyptic number.

1612255121800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1612255121800 is an abundant number, since it is smaller than the sum of its proper divisors (2318617337600).

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

1612255121800 is a wasteful number, since it uses less digits than its factorization.

1612255121800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807995 (or 3807986 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 34.

The spelling of 1612255121800 in words is "one trillion, six hundred twelve billion, two hundred fifty-five million, one hundred twenty-one thousand, eight hundred".