20061507905 has 8 divisors (see below), whose sum is σ = 24247003200. Its totient is φ = 15933743856.

The previous prime is 20061507899. The next prime is 20061507913. The reversal of 20061507905 is 50970516002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20061507905 - 2⁶ = 20061507841 is a prime.

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, 14432045 + ... + 14433434.

It is an arithmetic number, because the mean of its divisors is an integer number (3030875400).

Almost surely, 2^20061507905 is an apocalyptic number.

It is an amenable number.

20061507905 is a deficient number, since it is larger than the sum of its proper divisors (4185495295).

20061507905 is a wasteful number, since it uses less digits than its factorization.

20061507905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28865623.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 20061507905 in words is "twenty billion, sixty-one million, five hundred seven thousand, nine hundred five".