20146734812 has 6 divisors (see below), whose sum is σ = 35256785928. Its totient is φ = 10073367404.

The previous prime is 20146734743. The next prime is 20146734821. The reversal of 20146734812 is 21843764102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2518341848 + ... + 2518341855.

It is an arithmetic number, because the mean of its divisors is an integer number (5876130988).

Almost surely, 2^20146734812 is an apocalyptic number.

It is an amenable number.

20146734812 is a deficient number, since it is larger than the sum of its proper divisors (15110051116).

20146734812 is a wasteful number, since it uses less digits than its factorization.

20146734812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036683707 (or 5036683705 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 20146734812 in words is "twenty billion, one hundred forty-six million, seven hundred thirty-four thousand, eight hundred twelve".