145246522420 has 24 divisors (see below), whose sum is σ = 305814104064. Its totient is φ = 57946912416.

The previous prime is 145246522367. The next prime is 145246522423. The reversal of 145246522420 is 24225642541.

It is a self number, because there is not a number n which added to its sum of digits gives 145246522420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145246522423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9473184 + ... + 9488503.

It is an arithmetic number, because the mean of its divisors is an integer number (12742254336).

Almost surely, 2^145246522420 is an apocalyptic number.

145246522420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145246522420 is an abundant number, since it is smaller than the sum of its proper divisors (160567581644).

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

145246522420 is a wasteful number, since it uses less digits than its factorization.

145246522420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18962079 (or 18962077 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 145246522420 in words is "one hundred forty-five billion, two hundred forty-six million, five hundred twenty-two thousand, four hundred twenty".