42003796686621 has 32 divisors (see below), whose sum is σ = 71310120726528. Its totient is φ = 21355895519040.

The previous prime is 42003796686589. The next prime is 42003796686641. The reversal of 42003796686621 is 12668669730024.

It is not a de Polignac number, because 42003796686621 - 2⁵ = 42003796686589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42003796686641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1934399970 + ... + 1934421683.

It is an arithmetic number, because the mean of its divisors is an integer number (2228441272704).

Almost surely, 2^{42003796686621} is an apocalyptic number.

It is an amenable number.

42003796686621 is a deficient number, since it is larger than the sum of its proper divisors (29306324039907).

42003796686621 is a wasteful number, since it uses less digits than its factorization.

42003796686621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868821721.

The product of its (nonzero) digits is 31352832, while the sum is 60.

The spelling of 42003796686621 in words is "forty-two trillion, three billion, seven hundred ninety-six million, six hundred eighty-six thousand, six hundred twenty-one".