252909106978 has 8 divisors (see below), whose sum is σ = 413851266000. Its totient is φ = 114958684980.

The previous prime is 252909106939. The next prime is 252909106987. The reversal of 252909106978 is 879601909252.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5747934228 + ... + 5747934271.

It is an arithmetic number, because the mean of its divisors is an integer number (51731408250).

Almost surely, 2^252909106978 is an apocalyptic number.

252909106978 is a deficient number, since it is larger than the sum of its proper divisors (160942159022).

252909106978 is a wasteful number, since it uses less digits than its factorization.

252909106978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11495868512.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 252909106978 in words is "two hundred fifty-two billion, nine hundred nine million, one hundred six thousand, nine hundred seventy-eight".