42779399883021 has 48 divisors (see below), whose sum is σ = 62625860856000. Its totient is φ = 28137893204736.

The previous prime is 42779399883007. The next prime is 42779399883061. The reversal of 42779399883021 is 12038899397724.

42779399883021 is a `hidden beast` number, since 4 + 2 + 77 + 93 + 99 + 88 + 302 + 1 = 666.

42779399883021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42779399883021 - 2⁶ = 42779399882957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42779399883061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211853521 + ... + 212055353.

It is an arithmetic number, because the mean of its divisors is an integer number (1304705434500).

Almost surely, 2^{42779399883021} is an apocalyptic number.

It is an amenable number.

42779399883021 is a deficient number, since it is larger than the sum of its proper divisors (19846460972979).

42779399883021 is a wasteful number, since it uses less digits than its factorization.

42779399883021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203050 (or 203047 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 72.

The spelling of 42779399883021 in words is "forty-two trillion, seven hundred seventy-nine billion, three hundred ninety-nine million, eight hundred eighty-three thousand, twenty-one".