20014454646651 has 16 divisors (see below), whose sum is σ = 26841082623264. Its totient is φ = 13265403327744.

The previous prime is 20014454646643. The next prime is 20014454646689. The reversal of 20014454646651 is 15664645441002.

It is not a de Polignac number, because 20014454646651 - 2³ = 20014454646643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20014454646651.

It is not an unprimeable number, because it can be changed into a prime (20014454646611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15433045 + ... + 16679561.

It is an arithmetic number, because the mean of its divisors is an integer number (1677567663954).

Almost surely, 2^{20014454646651} is an apocalyptic number.

20014454646651 is a deficient number, since it is larger than the sum of its proper divisors (6826627976613).

20014454646651 is a wasteful number, since it uses less digits than its factorization.

20014454646651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277630.

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 20014454646651 in words is "twenty trillion, fourteen billion, four hundred fifty-four million, six hundred forty-six thousand, six hundred fifty-one".