2177427320046 has 80 divisors (see below), whose sum is σ = 5324645375280. Its totient is φ = 659572917120.

The previous prime is 2177427320021. The next prime is 2177427320087. The reversal of 2177427320046 is 6400237247712.

2177427320046 is a `hidden beast` number, since 2 + 17 + 7 + 427 + 3 + 200 + 4 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2177427319983 and 2177427320010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4430040 + ... + 4896948.

It is an arithmetic number, because the mean of its divisors is an integer number (66558067191).

Almost surely, 2^{2177427320046} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2177427320046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2662322687640).

2177427320046 is an abundant number, since it is smaller than the sum of its proper divisors (3147218055234).

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

2177427320046 is a wasteful number, since it uses less digits than its factorization.

2177427320046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469551 (or 469542 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 45.

The spelling of 2177427320046 in words is "two trillion, one hundred seventy-seven billion, four hundred twenty-seven million, three hundred twenty thousand, forty-six".