4177192120661 has 24 divisors (see below), whose sum is σ = 5027322762720. Its totient is φ = 3456586285152.

The previous prime is 4177192120637. The next prime is 4177192120697. The reversal of 4177192120661 is 1660212917714.

It is a de Polignac number, because none of the positive numbers 2^k-4177192120661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4177192120601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12434246 + ... + 12765768.

It is an arithmetic number, because the mean of its divisors is an integer number (209471781780).

Almost surely, 2^{4177192120661} is an apocalyptic number.

It is an amenable number.

4177192120661 is a deficient number, since it is larger than the sum of its proper divisors (850130642059).

4177192120661 is a wasteful number, since it uses less digits than its factorization.

4177192120661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340433 (or 340426 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 4177192120661 in words is "four trillion, one hundred seventy-seven billion, one hundred ninety-two million, one hundred twenty thousand, six hundred sixty-one".