2105151670550 has 12 divisors (see below), whose sum is σ = 3915582107316. Its totient is φ = 842060668200.

The previous prime is 2105151670549. The next prime is 2105151670561. The reversal of 2105151670550 is 550761515012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21051516656 + ... + 21051516755.

It is an arithmetic number, because the mean of its divisors is an integer number (326298508943).

Almost surely, 2^{2105151670550} is an apocalyptic number.

2105151670550 is a deficient number, since it is larger than the sum of its proper divisors (1810430436766).

2105151670550 is a wasteful number, since it uses less digits than its factorization.

2105151670550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42103033423 (or 42103033418 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 38.

The spelling of 2105151670550 in words is "two trillion, one hundred five billion, one hundred fifty-one million, six hundred seventy thousand, five hundred fifty".