7120711878 has 16 divisors (see below), whose sum is σ = 16275912960. Its totient is φ = 2034489096.

The previous prime is 7120711867. The next prime is 7120711883. The reversal of 7120711878 is 8781170217.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 169540759 = 7120711878 / (7 + 1 + 2 + 0 + 7 + 1 + 1 + 8 + 7 + 8).

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, 84770338 + ... + 84770421.

It is an arithmetic number, because the mean of its divisors is an integer number (1017244560).

Almost surely, 2^7120711878 is an apocalyptic number.

7120711878 is an abundant number, since it is smaller than the sum of its proper divisors (9155201082).

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

7120711878 is a wasteful number, since it uses less digits than its factorization.

7120711878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169540771.

The product of its (nonzero) digits is 43904, while the sum is 42.

The square root of 7120711878 is about 84384.3106151849. The cubic root of 7120711878 is about 1923.8644567688.

The spelling of 7120711878 in words is "seven billion, one hundred twenty million, seven hundred eleven thousand, eight hundred seventy-eight".