2120061640440 has 128 divisors (see below), whose sum is σ = 6597249373440. Its totient is φ = 544637592576.

The previous prime is 2120061640439. The next prime is 2120061640523. The reversal of 2120061640440 is 440461600212.

It is a happy number.

It is a super-2 number, since 2×2120061640440² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2120061640398 and 2120061640407.

It is a congruent number.

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, 2437462 + ... + 3190821.

It is an arithmetic number, because the mean of its divisors is an integer number (51541010730).

Almost surely, 2^{2120061640440} is an apocalyptic number.

2120061640440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120061640440 is an abundant number, since it is smaller than the sum of its proper divisors (4477187733000).

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

2120061640440 is a wasteful number, since it uses less digits than its factorization.

2120061640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5628413 (or 5628409 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 2120061640440 in words is "two trillion, one hundred twenty billion, sixty-one million, six hundred forty thousand, four hundred forty".