53985947994 has 24 divisors (see below), whose sum is σ = 127603150272. Its totient is φ = 16359378120.

The previous prime is 53985947987. The next prime is 53985948011. The reversal of 53985947994 is 49974958935.

53985947994 is a `hidden beast` number, since 539 + 85 + 9 + 4 + 7 + 9 + 9 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136327954 + ... + 136328349.

It is an arithmetic number, because the mean of its divisors is an integer number (5316797928).

Almost surely, 2^53985947994 is an apocalyptic number.

53985947994 is an abundant number, since it is smaller than the sum of its proper divisors (73617202278).

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

53985947994 is a wasteful number, since it uses less digits than its factorization.

53985947994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272656322 (or 272656319 counting only the distinct ones).

The product of its digits is 440899200, while the sum is 72.

The spelling of 53985947994 in words is "fifty-three billion, nine hundred eighty-five million, nine hundred forty-seven thousand, nine hundred ninety-four".