20461458705 has 32 divisors (see below), whose sum is σ = 33836203008. Its totient is φ = 10547692800.

The previous prime is 20461458679. The next prime is 20461458749. The reversal of 20461458705 is 50785416402.

It is a happy number.

It is not a de Polignac number, because 20461458705 - 2²¹ = 20459361553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354967 + ... + 408563.

It is an arithmetic number, because the mean of its divisors is an integer number (1057381344).

Almost surely, 2^20461458705 is an apocalyptic number.

It is an amenable number.

20461458705 is a deficient number, since it is larger than the sum of its proper divisors (13374744303).

20461458705 is a wasteful number, since it uses less digits than its factorization.

20461458705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54457.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 20461458705 in words is "twenty billion, four hundred sixty-one million, four hundred fifty-eight thousand, seven hundred five".