9742258731520 has 160 divisors (see below), whose sum is σ = 26931777827328. Its totient is φ = 3310642987008.

The previous prime is 9742258731487. The next prime is 9742258731533. The reversal of 9742258731520 is 251378522479.

It is a happy number.

9742258731520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380584 + ... + 4430503.

Almost surely, 2^{9742258731520} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9742258731520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13465888913664).

9742258731520 is an abundant number, since it is smaller than the sum of its proper divisors (17189519095808).

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

9742258731520 is a wasteful number, since it uses less digits than its factorization.

9742258731520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811230 (or 4811214 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 9742258731520 in words is "nine trillion, seven hundred forty-two billion, two hundred fifty-eight million, seven hundred thirty-one thousand, five hundred twenty".