7776906144 has 48 divisors (see below), whose sum is σ = 23330720448. Its totient is φ = 2221972992.

The previous prime is 7776906143. The next prime is 7776906197. The reversal of 7776906144 is 4416096777.

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

It is not an unprimeable number, because it can be changed into a prime (7776906143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5785717 + ... + 5787060.

It is an arithmetic number, because the mean of its divisors is an integer number (486056676).

Almost surely, 2^7776906144 is an apocalyptic number.

It is an amenable number.

7776906144 is an abundant number, since it is smaller than the sum of its proper divisors (15553814304).

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

7776906144 is a wasteful number, since it uses less digits than its factorization.

7776906144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11572797 (or 11572789 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 51.

The square root of 7776906144 is about 88186.7685313392. The cubic root of 7776906144 is about 1981.2333016349.

The spelling of 7776906144 in words is "seven billion, seven hundred seventy-six million, nine hundred six thousand, one hundred forty-four".