20235440612 has 24 divisors (see below), whose sum is σ = 38409600600. Its totient is φ = 9290301440.

The previous prime is 20235440609. The next prime is 20235440633. The reversal of 20235440612 is 21604453202.

It can be written as a sum of positive squares in 4 ways, for example, as 3608885476 + 16626555136 = 60074^2 + 128944^2 .

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, 3626237 + ... + 3631812.

It is an arithmetic number, because the mean of its divisors is an integer number (1600400025).

Almost surely, 2^20235440612 is an apocalyptic number.

It is an amenable number.

20235440612 is a deficient number, since it is larger than the sum of its proper divisors (18174159988).

20235440612 is a wasteful number, since it uses less digits than its factorization.

20235440612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7258111 (or 7258109 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20235440612 its reverse (21604453202), we get a palindrome (41839893814).

The spelling of 20235440612 in words is "twenty billion, two hundred thirty-five million, four hundred forty thousand, six hundred twelve".