20352015144 has 96 divisors (see below), whose sum is σ = 56091372480. Its totient is φ = 6665179392.

The previous prime is 20352015139. The next prime is 20352015149. The reversal of 20352015144 is 44151025302.

It is an interprime number because it is at equal distance from previous prime (20352015139) and next prime (20352015149).

It is not an unprimeable number, because it can be changed into a prime (20352015149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1374967 + ... + 1389689.

It is an arithmetic number, because the mean of its divisors is an integer number (584285130).

Almost surely, 2^20352015144 is an apocalyptic number.

20352015144 is a gapful number since it is divisible by the number (24) 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 20352015144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28045686240).

20352015144 is an abundant number, since it is smaller than the sum of its proper divisors (35739357336).

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

20352015144 is a wasteful number, since it uses less digits than its factorization.

20352015144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15071 (or 15064 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20352015144 in words is "twenty billion, three hundred fifty-two million, fifteen thousand, one hundred forty-four".