7157678850 has 144 divisors (see below), whose sum is σ = 22011305472. Its totient is φ = 1633524480.

The previous prime is 7157678813. The next prime is 7157678851. The reversal of 7157678850 is 588767517.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7157678851) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2717134 + ... + 2719766.

It is an arithmetic number, because the mean of its divisors is an integer number (152856288).

Almost surely, 2^7157678850 is an apocalyptic number.

7157678850 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7157678850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11005652736).

7157678850 is an abundant number, since it is smaller than the sum of its proper divisors (14853626622).

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

7157678850 is a wasteful number, since it uses less digits than its factorization.

7157678850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521 (or 3513 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 54.

The square root of 7157678850 is about 84603.0664337883. The cubic root of 7157678850 is about 1927.1879412245.

It can be divided in two parts, 71576 and 78850, that added together give a triangular number (150426 = T₅₄₈).

The spelling of 7157678850 in words is "seven billion, one hundred fifty-seven million, six hundred seventy-eight thousand, eight hundred fifty".