22015961245520 has 160 divisors (see below), whose sum is σ = 55937899745280. Its totient is φ = 7991845931520.

The previous prime is 22015961245489. The next prime is 22015961245561. The reversal of 22015961245520 is 2554216951022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 2798516627 + ... + 2798524493.

It is an arithmetic number, because the mean of its divisors is an integer number (349611873408).

Almost surely, 2^{22015961245520} is an apocalyptic number.

22015961245520 is a gapful number since it is divisible by the number (20) 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 22015961245520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27968949872640).

22015961245520 is an abundant number, since it is smaller than the sum of its proper divisors (33921938499760).

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

22015961245520 is a wasteful number, since it uses less digits than its factorization.

22015961245520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13033 (or 13027 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 22015961245520 in words is "twenty-two trillion, fifteen billion, nine hundred sixty-one million, two hundred forty-five thousand, five hundred twenty".