840777421162 has 16 divisors (see below), whose sum is σ = 1442706753600. Its totient is φ = 359989672608.

The previous prime is 840777421153. The next prime is 840777421163. The reversal of 840777421162 is 261124777048.

It is not an unprimeable number, because it can be changed into a prime (840777421163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28610448 + ... + 28639819.

It is an arithmetic number, because the mean of its divisors is an integer number (90169172100).

Almost surely, 2^840777421162 is an apocalyptic number.

840777421162 is a deficient number, since it is larger than the sum of its proper divisors (601929332438).

840777421162 is a wasteful number, since it uses less digits than its factorization.

840777421162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57251325.

The product of its (nonzero) digits is 1053696, while the sum is 49.

The spelling of 840777421162 in words is "eight hundred forty billion, seven hundred seventy-seven million, four hundred twenty-one thousand, one hundred sixty-two".