20455640647035 has 16 divisors (see below), whose sum is σ = 35704390947840. Its totient is φ = 9917886374240.

The previous prime is 20455640647009. The next prime is 20455640647049. The reversal of 20455640647035 is 53074604655402.

It is not a de Polignac number, because 20455640647035 - 2¹⁶ = 20455640581499 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61986789675 + ... + 61986790004.

It is an arithmetic number, because the mean of its divisors is an integer number (2231524434240).

Almost surely, 2^{20455640647035} is an apocalyptic number.

20455640647035 is a deficient number, since it is larger than the sum of its proper divisors (15248750300805).

20455640647035 is a wasteful number, since it uses less digits than its factorization.

20455640647035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123973579698.

The product of its (nonzero) digits is 12096000, while the sum is 51.

The spelling of 20455640647035 in words is "twenty trillion, four hundred fifty-five billion, six hundred forty million, six hundred forty-seven thousand, thirty-five".