2345556780 has 144 divisors (see below), whose sum is σ = 8144345664. Its totient is φ = 535265280.

The previous prime is 2345556779. The next prime is 2345556791. The reversal of 2345556780 is 876555432.

2345556780 is a `hidden beast` number, since 2 + 3 + 4 + 5 + 5 + 567 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1109004 + ... + 1111116.

It is an arithmetic number, because the mean of its divisors is an integer number (56557956).

Almost surely, 2^2345556780 is an apocalyptic number.

2345556780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2345556780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4072172832).

2345556780 is an abundant number, since it is smaller than the sum of its proper divisors (5798788884).

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

2345556780 is a wasteful number, since it uses less digits than its factorization.

2345556780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016 (or 3011 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The square root of 2345556780 is about 48430.9485762978. The cubic root of 2345556780 is about 1328.6644554057.

The spelling of 2345556780 in words is "two billion, three hundred forty-five million, five hundred fifty-six thousand, seven hundred eighty".