2105156273440 has 96 divisors (see below), whose sum is σ = 5426588006784. Its totient is φ = 765366589440.

The previous prime is 2105156273431. The next prime is 2105156273527. The reversal of 2105156273440 is 443726515012.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2105156273393 and 2105156273402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9423517 + ... + 9644323.

It is an arithmetic number, because the mean of its divisors is an integer number (56526958404).

Almost surely, 2^{2105156273440} is an apocalyptic number.

2105156273440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105156273440 is an abundant number, since it is smaller than the sum of its proper divisors (3321431733344).

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

2105156273440 is a wasteful number, since it uses less digits than its factorization.

2105156273440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226250 (or 226242 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 2105156273440 in words is "two trillion, one hundred five billion, one hundred fifty-six million, two hundred seventy-three thousand, four hundred forty".