40658454905 has 4 divisors (see below), whose sum is σ = 48790145892. Its totient is φ = 32526763920.

The previous prime is 40658454887. The next prime is 40658454911. The reversal of 40658454905 is 50945485604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27546372841 + 13112082064 = 165971^2 + 114508^2 .

It is not a de Polignac number, because 40658454905 - 2¹⁰ = 40658453881 is a prime.

It is a super-5 number, since 5×40658454905⁵ (a number of 54 digits) contains 55555 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4065845486 + ... + 4065845495.

It is an arithmetic number, because the mean of its divisors is an integer number (12197536473).

Almost surely, 2^40658454905 is an apocalyptic number.

It is an amenable number.

40658454905 is a deficient number, since it is larger than the sum of its proper divisors (8131690987).

40658454905 is an equidigital number, since it uses as much as digits as its factorization.

40658454905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131690986.

The product of its (nonzero) digits is 3456000, while the sum is 50.

The spelling of 40658454905 in words is "forty billion, six hundred fifty-eight million, four hundred fifty-four thousand, nine hundred five".