840137678412 has 96 divisors (see below), whose sum is σ = 2221910611200. Its totient is φ = 245468086272.

The previous prime is 840137678389. The next prime is 840137678461. The reversal of 840137678412 is 214876731048.

840137678412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1608213 + ... + 2065580.

It is an arithmetic number, because the mean of its divisors is an integer number (23144902200).

Almost surely, 2^840137678412 is an apocalyptic number.

It is an amenable number.

840137678412 is an abundant number, since it is smaller than the sum of its proper divisors (1381772932788).

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

840137678412 is a wasteful number, since it uses less digits than its factorization.

840137678412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673895 (or 3673893 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 840137678412 in words is "eight hundred forty billion, one hundred thirty-seven million, six hundred seventy-eight thousand, four hundred twelve".