20747370452 has 12 divisors (see below), whose sum is σ = 38443657140. Its totient is φ = 9763468416.

The previous prime is 20747370451. The next prime is 20747370461. The reversal of 20747370452 is 25407374702.

It can be written as a sum of positive squares in 2 ways, for example, as 6235313296 + 14512057156 = 78964^2 + 120466^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20747370451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152554127 + ... + 152554262.

It is an arithmetic number, because the mean of its divisors is an integer number (3203638095).

Almost surely, 2^20747370452 is an apocalyptic number.

It is an amenable number.

20747370452 is a deficient number, since it is larger than the sum of its proper divisors (17696286688).

20747370452 is a wasteful number, since it uses less digits than its factorization.

20747370452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305108410 (or 305108408 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 41.

The spelling of 20747370452 in words is "twenty billion, seven hundred forty-seven million, three hundred seventy thousand, four hundred fifty-two".