1840040220040 has 64 divisors (see below), whose sum is σ = 4672202472000. Its totient is φ = 646032925440.

The previous prime is 1840040220013. The next prime is 1840040220079. The reversal of 1840040220040 is 400220400481.

It is a super-2 number, since 2×1840040220040² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1840040219987 and 1840040220014.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72089130 + ... + 72114649.

It is an arithmetic number, because the mean of its divisors is an integer number (73003163625).

Almost surely, 2^{1840040220040} is an apocalyptic number.

1840040220040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1840040220040 is an abundant number, since it is smaller than the sum of its proper divisors (2832162251960).

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

1840040220040 is a wasteful number, since it uses less digits than its factorization.

1840040220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144203830 (or 144203826 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The spelling of 1840040220040 in words is "one trillion, eight hundred forty billion, forty million, two hundred twenty thousand, forty".