7781134104 has 48 divisors (see below), whose sum is σ = 21854425320. Its totient is φ = 2593710720.

The previous prime is 7781134061. The next prime is 7781134121. The reversal of 7781134104 is 4014311877.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1999377 + ... + 2003264.

Almost surely, 2^7781134104 is an apocalyptic number.

It is an amenable number.

7781134104 is an abundant number, since it is smaller than the sum of its proper divisors (14073291216).

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

7781134104 is a wasteful number, since it uses less digits than its factorization.

7781134104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4002662 (or 4002646 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 7781134104 is about 88210.7368975002. The cubic root of 7781134104 is about 1981.5922729046.

The spelling of 7781134104 in words is "seven billion, seven hundred eighty-one million, one hundred thirty-four thousand, one hundred four".