52016257978 has 8 divisors (see below), whose sum is σ = 78034623840. Its totient is φ = 26004716700.

The previous prime is 52016257973. The next prime is 52016257981. The reversal of 52016257978 is 87975261025.

It is a happy number.

52016257978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (52016257973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687048 + ... + 1717603.

It is an arithmetic number, because the mean of its divisors is an integer number (9754327980).

Almost surely, 2^52016257978 is an apocalyptic number.

52016257978 is a deficient number, since it is larger than the sum of its proper divisors (26018365862).

52016257978 is a wasteful number, since it uses less digits than its factorization.

52016257978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412292.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 52016257978 in words is "fifty-two billion, sixteen million, two hundred fifty-seven thousand, nine hundred seventy-eight".