20004145492 has 12 divisors (see below), whose sum is σ = 35011841536. Its totient is φ = 10000762200.

The previous prime is 20004145487. The next prime is 20004145523. The reversal of 20004145492 is 29454140002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292884 + ... + 354667.

Almost surely, 2^20004145492 is an apocalyptic number.

It is an amenable number.

20004145492 is a deficient number, since it is larger than the sum of its proper divisors (15007696044).

20004145492 is a wasteful number, since it uses less digits than its factorization.

20004145492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655278 (or 655276 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 20004145492 its reverse (29454140002), we get a palindrome (49458285494).

The spelling of 20004145492 in words is "twenty billion, four million, one hundred forty-five thousand, four hundred ninety-two".