1398155910480 has 400 divisors, whose sum is σ = 5554511048064. Its totient is φ = 319302466560.

The previous prime is 1398155910479. The next prime is 1398155910493. The reversal of 1398155910480 is 840195518931.

It is a happy number.

1398155910480 is a `hidden beast` number, since 1 + 3 + 9 + 8 + 1 + 5 + 591 + 0 + 48 + 0 = 666.

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

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, 55008975 + ... + 55034385.

Almost surely, 2^{1398155910480} is an apocalyptic number.

1398155910480 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 1398155910480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2777255524032).

1398155910480 is an abundant number, since it is smaller than the sum of its proper divisors (4156355137584).

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

1398155910480 is a wasteful number, since it uses less digits than its factorization.

1398155910480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26656 (or 26641 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 54.

The spelling of 1398155910480 in words is "one trillion, three hundred ninety-eight billion, one hundred fifty-five million, nine hundred ten thousand, four hundred eighty".