2177773705672 has 16 divisors (see below), whose sum is σ = 4135013366400. Its totient is φ = 1075103474640.

The previous prime is 2177773705649. The next prime is 2177773705687. The reversal of 2177773705672 is 2765073777712.

It is a self number, because there is not a number n which added to its sum of digits gives 2177773705672.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722921604 + ... + 1722922867.

It is an arithmetic number, because the mean of its divisors is an integer number (258438335400).

Almost surely, 2^{2177773705672} is an apocalyptic number.

It is an amenable number.

2177773705672 is a deficient number, since it is larger than the sum of its proper divisors (1957239660728).

2177773705672 is a wasteful number, since it uses less digits than its factorization.

2177773705672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445844556 (or 3445844552 counting only the distinct ones).

The product of its (nonzero) digits is 42353640, while the sum is 61.

The spelling of 2177773705672 in words is "two trillion, one hundred seventy-seven billion, seven hundred seventy-three million, seven hundred five thousand, six hundred seventy-two".