20400364022 has 16 divisors (see below), whose sum is σ = 30707500560. Its totient is φ = 10164577248.

The previous prime is 20400364001. The next prime is 20400364043. The reversal of 20400364022 is 22046300402.

It is an interprime number because it is at equal distance from previous prime (20400364001) and next prime (20400364043).

It is a super-2 number, since 2×20400364022² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926768 + ... + 948524.

It is an arithmetic number, because the mean of its divisors is an integer number (1919218785).

Almost surely, 2^20400364022 is an apocalyptic number.

20400364022 is a deficient number, since it is larger than the sum of its proper divisors (10307136538).

20400364022 is a wasteful number, since it uses less digits than its factorization.

20400364022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23375.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20400364022 its reverse (22046300402), we get a palindrome (42446664424).

The spelling of 20400364022 in words is "twenty billion, four hundred million, three hundred sixty-four thousand, twenty-two".