7007800078 has 16 divisors (see below), whose sum is σ = 11136522384. Its totient is φ = 3295866240.

The previous prime is 7007800049. The next prime is 7007800081. The reversal of 7007800078 is 8700087007.

7007800078 is a nontrivial binomial coefficient, being equal to C(118388, 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 118387.

It is an arithmetic number, because the mean of its divisors is an integer number (696032649).

Almost surely, 2^7007800078 is an apocalyptic number.

7007800078 is the 118387-th triangular number and also the 59194-th hexagonal number.

7007800078 is the 39463-rd centered nonagonal number.

7007800078 is a deficient number, since it is larger than the sum of its proper divisors (4128722306).

7007800078 is a wasteful number, since it uses less digits than its factorization.

7007800078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120147.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 7007800078 is about 83712.6040569758. The cubic root of 7007800078 is about 1913.6414434256.

It can be divided in two parts, 7007 and 800078, that added together give a triangular number (807085 = T₁₂₇₀).

The spelling of 7007800078 in words is "seven billion, seven million, eight hundred thousand, seventy-eight".