7875778623 has 16 divisors (see below), whose sum is σ = 10576972800. Its totient is φ = 5212668384.

The previous prime is 7875778571. The next prime is 7875778663. The reversal of 7875778623 is 3268775787.

It is not a de Polignac number, because 7875778623 - 2⁸ = 7875778367 is a prime.

It is a super-2 number, since 2×7875778623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7875778663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262165 + ... + 290657.

It is an arithmetic number, because the mean of its divisors is an integer number (661060800).

Almost surely, 2^7875778623 is an apocalyptic number.

7875778623 is a deficient number, since it is larger than the sum of its proper divisors (2701194177).

7875778623 is a wasteful number, since it uses less digits than its factorization.

7875778623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29158.

The product of its digits is 27659520, while the sum is 60.

The square root of 7875778623 is about 88745.5836816684. The cubic root of 7875778623 is about 1989.5941718499.

The spelling of 7875778623 in words is "seven billion, eight hundred seventy-five million, seven hundred seventy-eight thousand, six hundred twenty-three".