20015055412 has 24 divisors (see below), whose sum is σ = 38229079392. Its totient is φ = 9093343200.

The previous prime is 20015055409. The next prime is 20015055427. The reversal of 20015055412 is 21455051002.

It is a congruent number.

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, 17539 + ... + 200842.

It is an arithmetic number, because the mean of its divisors is an integer number (1592878308).

Almost surely, 2^20015055412 is an apocalyptic number.

20015055412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20015055412 is a deficient number, since it is larger than the sum of its proper divisors (18214023980).

20015055412 is a wasteful number, since it uses less digits than its factorization.

20015055412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220479 (or 220477 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 20015055412 in words is "twenty billion, fifteen million, fifty-five thousand, four hundred twelve".