1201125494464 has 56 divisors (see below), whose sum is σ = 2724924252960. Its totient is φ = 514589822976.

The previous prime is 1201125494431. The next prime is 1201125494507. The reversal of 1201125494464 is 4644945211021.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 1201125494464.

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 7 ways as a sum of consecutive naturals, for example, 835122 + ... + 1760590.

It is an arithmetic number, because the mean of its divisors is an integer number (48659361660).

Almost surely, 2^{1201125494464} is an apocalyptic number.

1201125494464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1201125494464 is an abundant number, since it is smaller than the sum of its proper divisors (1523798758496).

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

1201125494464 is an equidigital number, since it uses as much as digits as its factorization.

1201125494464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928385 (or 928375 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 1201125494464 in words is "one trillion, two hundred one billion, one hundred twenty-five million, four hundred ninety-four thousand, four hundred sixty-four".