7072755978 has 16 divisors (see below), whose sum is σ = 14412409056. Its totient is φ = 2313102480.

The previous prime is 7072755931. The next prime is 7072756121. The reversal of 7072755978 is 8795572707.

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, 11120368 + ... + 11121003.

It is an arithmetic number, because the mean of its divisors is an integer number (900775566).

Almost surely, 2^7072755978 is an apocalyptic number.

7072755978 is an abundant number, since it is smaller than the sum of its proper divisors (7339653078).

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

7072755978 is a wasteful number, since it uses less digits than its factorization.

7072755978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22241429.

The product of its (nonzero) digits is 8643600, while the sum is 57.

The square root of 7072755978 is about 84099.6788222167. The cubic root of 7072755978 is about 1919.5358377756.

The spelling of 7072755978 in words is "seven billion, seventy-two million, seven hundred fifty-five thousand, nine hundred seventy-eight".