1201148685840 has 80 divisors (see below), whose sum is σ = 3724238258496. Its totient is φ = 320248051200.

The previous prime is 1201148685827. The next prime is 1201148685857. The reversal of 1201148685840 is 485868411021.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1201148685840.

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 15 ways as a sum of consecutive naturals, for example, 875010 + ... + 1779870.

Almost surely, 2^{1201148685840} is an apocalyptic number.

1201148685840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201148685840 is an abundant number, since it is smaller than the sum of its proper divisors (2523089572656).

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

1201148685840 is a wasteful number, since it uses less digits than its factorization.

1201148685840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910408 (or 910402 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 48.

The spelling of 1201148685840 in words is "one trillion, two hundred one billion, one hundred forty-eight million, six hundred eighty-five thousand, eight hundred forty".