145052521420 has 96 divisors (see below), whose sum is σ = 333362469888. Its totient is φ = 52801723392.

The previous prime is 145052521417. The next prime is 145052521451. The reversal of 145052521420 is 24125250541.

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, 1271659 + ... + 1381021.

It is an arithmetic number, because the mean of its divisors is an integer number (3472525728).

Almost surely, 2^145052521420 is an apocalyptic number.

145052521420 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 145052521420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166681234944).

145052521420 is an abundant number, since it is smaller than the sum of its proper divisors (188309948468).

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

145052521420 is a wasteful number, since it uses less digits than its factorization.

145052521420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109519 (or 109517 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 145052521420 its reverse (24125250541), we get a palindrome (169177771961).

The spelling of 145052521420 in words is "one hundred forty-five billion, fifty-two million, five hundred twenty-one thousand, four hundred twenty".