40668651420 has 48 divisors (see below), whose sum is σ = 114136501248. Its totient is φ = 10819804480.

The previous prime is 40668651391. The next prime is 40668651437. The reversal of 40668651420 is 2415686604.

40668651420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 760464 + ... + 812183.

It is an arithmetic number, because the mean of its divisors is an integer number (2377843776).

Almost surely, 2^40668651420 is an apocalyptic number.

It is an amenable number.

40668651420 is an abundant number, since it is smaller than the sum of its proper divisors (73467849828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40668651420 is a wasteful number, since it uses less digits than its factorization.

40668651420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573090 (or 1573088 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 40668651420 in words is "forty billion, six hundred sixty-eight million, six hundred fifty-one thousand, four hundred twenty".