21950745093810 has 320 divisors, whose sum is σ = 67578470201088. Its totient is φ = 5070817230336.

The previous prime is 21950745093799. The next prime is 21950745093817. The reversal of 21950745093810 is 1839054705912.

It is a happy number.

21950745093810 is a `hidden beast` number, since 2 + 1 + 9 + 50 + 7 + 4 + 509 + 3 + 81 + 0 = 666.

It is a super-2 number, since 2×21950745093810² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (21950745093817) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 11981029 + ... + 13691111.

Almost surely, 2^{21950745093810} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21950745093810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33789235100544).

21950745093810 is an abundant number, since it is smaller than the sum of its proper divisors (45627725107278).

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

21950745093810 is a wasteful number, since it uses less digits than its factorization.

21950745093810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710191 (or 1710182 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 21950745093810 in words is "twenty-one trillion, nine hundred fifty billion, seven hundred forty-five million, ninety-three thousand, eight hundred ten".