2156046407644 has 12 divisors (see below), whose sum is σ = 3801883360968. Its totient is φ = 1069794018800.

The previous prime is 2156046407629. The next prime is 2156046407651. The reversal of 2156046407644 is 4467046406512.

It is a super-2 number, since 2×2156046407644² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057295667 + ... + 2057296714.

It is an arithmetic number, because the mean of its divisors is an integer number (316823613414).

Almost surely, 2^{2156046407644} is an apocalyptic number.

It is an amenable number.

2156046407644 is a deficient number, since it is larger than the sum of its proper divisors (1645836953324).

2156046407644 is a wasteful number, since it uses less digits than its factorization.

2156046407644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114592516 (or 4114592514 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 49.

The spelling of 2156046407644 in words is "two trillion, one hundred fifty-six billion, forty-six million, four hundred seven thousand, six hundred forty-four".