4155561312 has 48 divisors (see below), whose sum is σ = 12466685952. Its totient is φ = 1187303040.

The previous prime is 4155561257. The next prime is 4155561331. The reversal of 4155561312 is 2131655514.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×4155561312² = 34537379635582322688, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3091264 + ... + 3092607.

It is an arithmetic number, because the mean of its divisors is an integer number (259722624).

Almost surely, 2^4155561312 is an apocalyptic number.

4155561312 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4155561312 is an abundant number, since it is smaller than the sum of its proper divisors (8311124640).

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

4155561312 is a wasteful number, since it uses less digits than its factorization.

4155561312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6183891 (or 6183883 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 4155561312 is about 64463.6433348287. The cubic root of 4155561312 is about 1607.7180887437.

The spelling of 4155561312 in words is "four billion, one hundred fifty-five million, five hundred sixty-one thousand, three hundred twelve".