20963740474 has 4 divisors (see below), whose sum is σ = 31445610714. Its totient is φ = 10481870236.

The previous prime is 20963740453. The next prime is 20963740477. The reversal of 20963740474 is 47404736902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12013256025 + 8950484449 = 109605^2 + 94607^2 .

It is a super-2 number, since 2×20963740474² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20963740477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5240935117 + ... + 5240935120.

Almost surely, 2^20963740474 is an apocalyptic number.

20963740474 is a deficient number, since it is larger than the sum of its proper divisors (10481870240).

20963740474 is a wasteful number, since it uses less digits than its factorization.

20963740474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481870239.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 20963740474 in words is "twenty billion, nine hundred sixty-three million, seven hundred forty thousand, four hundred seventy-four".