1403788680720 has 160 divisors (see below), whose sum is σ = 4836504551040. Its totient is φ = 374248235520.

The previous prime is 1403788680691. The next prime is 1403788680739. The reversal of 1403788680720 is 270868873041.

It is a happy number.

1403788680720 is a `hidden beast` number, since 140 + 378 + 8 + 68 + 0 + 72 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8604547 + ... + 8766173.

It is an arithmetic number, because the mean of its divisors is an integer number (30228153444).

Almost surely, 2^{1403788680720} is an apocalyptic number.

1403788680720 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 1403788680720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2418252275520).

1403788680720 is an abundant number, since it is smaller than the sum of its proper divisors (3432715870320).

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

1403788680720 is a wasteful number, since it uses less digits than its factorization.

1403788680720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165670 (or 165658 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 1403788680720 in words is "one trillion, four hundred three billion, seven hundred eighty-eight million, six hundred eighty thousand, seven hundred twenty".