22705245381 has 32 divisors (see below), whose sum is σ = 37285613568. Its totient is φ = 11968125120.

The previous prime is 22705245379. The next prime is 22705245427. The reversal of 22705245381 is 18354250722.

It is not a de Polignac number, because 22705245381 - 2¹ = 22705245379 is a prime.

It is a super-2 number, since 2×22705245381² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22705245331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 377986 + ... + 433916.

It is an arithmetic number, because the mean of its divisors is an integer number (1165175424).

Almost surely, 2^22705245381 is an apocalyptic number.

22705245381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22705245381 is a deficient number, since it is larger than the sum of its proper divisors (14580368187).

22705245381 is a wasteful number, since it uses less digits than its factorization.

22705245381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57441.

The product of its (nonzero) digits is 134400, while the sum is 39.

The spelling of 22705245381 in words is "twenty-two billion, seven hundred five million, two hundred forty-five thousand, three hundred eighty-one".