20635774227400 has 48 divisors (see below), whose sum is σ = 50800420679940. Its totient is φ = 7768762060800.

The previous prime is 20635774227373. The next prime is 20635774227401. The reversal of 20635774227400 is 472247753602.

It can be written as a sum of positive squares in 6 ways, for example, as 8837194998564 + 11798579228836 = 2972742^2 + 3434906^2 .

It is not an unprimeable number, because it can be changed into a prime (20635774227401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3034669281 + ... + 3034676080.

Almost surely, 2^{20635774227400} is an apocalyptic number.

20635774227400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20635774227400 is an abundant number, since it is smaller than the sum of its proper divisors (30164646452540).

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

20635774227400 is a wasteful number, since it uses less digits than its factorization.

20635774227400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069345394 (or 6069345385 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 49.

The spelling of 20635774227400 in words is "twenty trillion, six hundred thirty-five billion, seven hundred seventy-four million, two hundred twenty-seven thousand, four hundred".