20064901961 has 16 divisors (see below), whose sum is σ = 22119318144. Its totient is φ = 18083810304.

The previous prime is 20064901957. The next prime is 20064901991. The reversal of 20064901961 is 16910946002.

It is not a de Polignac number, because 20064901961 - 2² = 20064901957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20064901991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1966505 + ... + 1976681.

It is an arithmetic number, because the mean of its divisors is an integer number (1382457384).

Almost surely, 2^20064901961 is an apocalyptic number.

It is an amenable number.

20064901961 is a deficient number, since it is larger than the sum of its proper divisors (2054416183).

20064901961 is a wasteful number, since it uses less digits than its factorization.

20064901961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13760.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 20064901961 in words is "twenty billion, sixty-four million, nine hundred one thousand, nine hundred sixty-one".