1520440078080 has 432 divisors, whose sum is σ = 6099993510912. Its totient is φ = 315934924800.

The previous prime is 1520440078043. The next prime is 1520440078081. The reversal of 1520440078080 is 808700440251.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520440078081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3018745 + ... + 3486215.

Almost surely, 2^{1520440078080} is an apocalyptic number.

1520440078080 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 1520440078080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3049996755456).

1520440078080 is an abundant number, since it is smaller than the sum of its proper divisors (4579553432832).

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

1520440078080 is a wasteful number, since it uses less digits than its factorization.

1520440078080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467524 (or 467499 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 1520440078080 in words is "one trillion, five hundred twenty billion, four hundred forty million, seventy-eight thousand, eighty".