22373213520 has 320 divisors, whose sum is σ = 81206231040. Its totient is φ = 4990132224.

The previous prime is 22373213503. The next prime is 22373213557. The reversal of 22373213520 is 2531237322.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12718401 + ... + 12720159.

It is an arithmetic number, because the mean of its divisors is an integer number (253769472).

Almost surely, 2^22373213520 is an apocalyptic number.

22373213520 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 22373213520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40603115520).

22373213520 is an abundant number, since it is smaller than the sum of its proper divisors (58833017520).

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

22373213520 is a wasteful number, since it uses less digits than its factorization.

22373213520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The spelling of 22373213520 in words is "twenty-two billion, three hundred seventy-three million, two hundred thirteen thousand, five hundred twenty".