1241501955840 has 720 divisors, whose sum is σ = 4533603250176. Its totient is φ = 324327628800.

The previous prime is 1241501955839. The next prime is 1241501955893. The reversal of 1241501955840 is 485591051421.

1241501955840 is a `hidden beast` number, since 1 + 2 + 4 + 1 + 50 + 1 + 9 + 558 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1406004039 + ... + 1406004921.

Almost surely, 2^{1241501955840} is an apocalyptic number.

1241501955840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1241501955840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2266801625088).

1241501955840 is an abundant number, since it is smaller than the sum of its proper divisors (3292101294336).

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

1241501955840 is an equidigital number, since it uses as much as digits as its factorization.

1241501955840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The spelling of 1241501955840 in words is "one trillion, two hundred forty-one billion, five hundred one million, nine hundred fifty-five thousand, eight hundred forty".