9071498797920 has 1440 divisors, whose sum is σ = 35435460614400. Its totient is φ = 2184108945408.

The previous prime is 9071498797903. The next prime is 9071498797927. The reversal of 9071498797920 is 297978941709.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a super-3 number, since 3×9071498797920³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9071498797927) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 25268798701 + ... + 25268799059.

It is an arithmetic number, because the mean of its divisors is an integer number (24607958760).

Almost surely, 2^{9071498797920} is an apocalyptic number.

9071498797920 is a gapful number since it is divisible by the number (90) 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 9071498797920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17717730307200).

9071498797920 is an abundant number, since it is smaller than the sum of its proper divisors (26363961816480).

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

9071498797920 is a wasteful number, since it uses less digits than its factorization.

9071498797920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 144027072, while the sum is 72.

The spelling of 9071498797920 in words is "nine trillion, seventy-one billion, four hundred ninety-eight million, seven hundred ninety-seven thousand, nine hundred twenty".