538339690978 has 8 divisors (see below), whose sum is σ = 821196138960. Its totient is φ = 264607644660.

The previous prime is 538339690957. The next prime is 538339690979. The reversal of 538339690978 is 879096933835.

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 (538339690979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281100268 + ... + 2281100503.

It is an arithmetic number, because the mean of its divisors is an integer number (102649517370).

Almost surely, 2^538339690978 is an apocalyptic number.

538339690978 is a deficient number, since it is larger than the sum of its proper divisors (282856447982).

538339690978 is a wasteful number, since it uses less digits than its factorization.

538339690978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562200832.

The product of its (nonzero) digits is 264539520, while the sum is 70.

The spelling of 538339690978 in words is "five hundred thirty-eight billion, three hundred thirty-nine million, six hundred ninety thousand, nine hundred seventy-eight".