1481239039644 has 432 divisors, whose sum is σ = 4875765393408. Its totient is φ = 389737256832.

The previous prime is 1481239039613. The next prime is 1481239039649. The reversal of 1481239039644 is 4469309321841.

1481239039644 is a `hidden beast` number, since 1 + 4 + 8 + 123 + 90 + 396 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481239039649) 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 143 ways as a sum of consecutive naturals, for example, 286670349 + ... + 286675515.

Almost surely, 2^{1481239039644} is an apocalyptic number.

1481239039644 is a gapful number since it is divisible by the number (14) 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 1481239039644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437882696704).

1481239039644 is an abundant number, since it is smaller than the sum of its proper divisors (3394526353764).

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

1481239039644 is a wasteful number, since it uses less digits than its factorization.

1481239039644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676 (or 5655 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 1481239039644 in words is "one trillion, four hundred eighty-one billion, two hundred thirty-nine million, thirty-nine thousand, six hundred forty-four".