2120105556644 has 12 divisors (see below), whose sum is σ = 3722270018544. Its totient is φ = 1056599837064.

The previous prime is 2120105556631. The next prime is 2120105556683. The reversal of 2120105556644 is 4466555010212.

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, 863233934 + ... + 863236389.

It is an arithmetic number, because the mean of its divisors is an integer number (310189168212).

Almost surely, 2^{2120105556644} is an apocalyptic number.

It is an amenable number.

2120105556644 is a deficient number, since it is larger than the sum of its proper divisors (1602164461900).

2120105556644 is a wasteful number, since it uses less digits than its factorization.

2120105556644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726470634 (or 1726470632 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 2120105556644 in words is "two trillion, one hundred twenty billion, one hundred five million, five hundred fifty-six thousand, six hundred forty-four".