4351231545520 has 160 divisors (see below), whose sum is σ = 10913627197440. Its totient is φ = 1608656501760.

The previous prime is 4351231545473. The next prime is 4351231545547. The reversal of 4351231545520 is 255451321534.

It is a super-3 number, since 3×4351231545520³ (a number of 39 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 37531482 + ... + 37647238.

It is an arithmetic number, because the mean of its divisors is an integer number (68210169984).

Almost surely, 2^{4351231545520} is an apocalyptic number.

4351231545520 is a gapful number since it is divisible by the number (40) 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 4351231545520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5456813598720).

4351231545520 is an abundant number, since it is smaller than the sum of its proper divisors (6562395651920).

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

4351231545520 is a wasteful number, since it uses less digits than its factorization.

4351231545520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116483 (or 116477 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 4351231545520 in words is "four trillion, three hundred fifty-one billion, two hundred thirty-one million, five hundred forty-five thousand, five hundred twenty".