52981139494 has 8 divisors (see below), whose sum is σ = 83654430840. Its totient is φ = 25096329216.

The previous prime is 52981139479. The next prime is 52981139507. The reversal of 52981139494 is 49493118925.

It is a happy number.

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

It is a super-2 number, since 2×52981139494² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 697120219 + ... + 697120294.

It is an arithmetic number, because the mean of its divisors is an integer number (10456803855).

Almost surely, 2^52981139494 is an apocalyptic number.

52981139494 is a deficient number, since it is larger than the sum of its proper divisors (30673291346).

52981139494 is a wasteful number, since it uses less digits than its factorization.

52981139494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394240534.

The product of its digits is 2799360, while the sum is 55.

The spelling of 52981139494 in words is "fifty-two billion, nine hundred eighty-one million, one hundred thirty-nine thousand, four hundred ninety-four".