20144047635 has 48 divisors (see below), whose sum is σ = 35789802048. Its totient is φ = 10475059200.

The previous prime is 20144047633. The next prime is 20144047669. The reversal of 20144047635 is 53674044102.

20144047635 is a `hidden beast` number, since 2 + 0 + 14 + 4 + 0 + 4 + 7 + 635 = 666.

It is not a de Polignac number, because 20144047635 - 2¹ = 20144047633 is a prime.

It is a super-2 number, since 2×20144047635² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20144047635.

It is not an unprimeable number, because it can be changed into a prime (20144047633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5354155 + ... + 5357915.

It is an arithmetic number, because the mean of its divisors is an integer number (745620876).

Almost surely, 2^20144047635 is an apocalyptic number.

20144047635 is a deficient number, since it is larger than the sum of its proper divisors (15645754413).

20144047635 is a wasteful number, since it uses less digits than its factorization.

20144047635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716 (or 6713 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 20144047635 in words is "twenty billion, one hundred forty-four million, forty-seven thousand, six hundred thirty-five".