7778856052 has 12 divisors (see below), whose sum is σ = 14850543456. Its totient is φ = 3535843640.

The previous prime is 7778856049. The next prime is 7778856067. The reversal of 7778856052 is 2506588777.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7778855984 and 7778856002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88396048 + ... + 88396135.

It is an arithmetic number, because the mean of its divisors is an integer number (1237545288).

Almost surely, 2^7778856052 is an apocalyptic number.

It is an amenable number.

7778856052 is a deficient number, since it is larger than the sum of its proper divisors (7071687404).

7778856052 is a wasteful number, since it uses less digits than its factorization.

7778856052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176792198 (or 176792196 counting only the distinct ones).

The product of its (nonzero) digits is 6585600, while the sum is 55.

The square root of 7778856052 is about 88197.8233971791. The cubic root of 7778856052 is about 1981.3988730401.

The spelling of 7778856052 in words is "seven billion, seven hundred seventy-eight million, eight hundred fifty-six thousand, fifty-two".