42621111361264 has 20 divisors (see below), whose sum is σ = 85425934410360. Its totient is φ = 20575708932800.

The previous prime is 42621111361253. The next prime is 42621111361267. The reversal of 42621111361264 is 46216311112624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42621111361267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45927921262 + ... + 45927922189.

It is an arithmetic number, because the mean of its divisors is an integer number (4271296720518).

Almost surely, 2^{42621111361264} is an apocalyptic number.

It is an amenable number.

42621111361264 is an abundant number, since it is smaller than the sum of its proper divisors (42804823049096).

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

42621111361264 is a wasteful number, since it uses less digits than its factorization.

42621111361264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91855843488 (or 91855843482 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

Adding to 42621111361264 its reverse (46216311112624), we get a palindrome (88837422473888).

The spelling of 42621111361264 in words is "forty-two trillion, six hundred twenty-one billion, one hundred eleven million, three hundred sixty-one thousand, two hundred sixty-four".