54139420692 has 144 divisors (see below), whose sum is σ = 158795949312. Its totient is φ = 15232250880.

The previous prime is 54139420681. The next prime is 54139420693. The reversal of 54139420692 is 29602493145.

54139420692 is a `hidden beast` number, since 5 + 4 + 139 + 420 + 6 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54139420693) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23204758 + ... + 23207090.

It is an arithmetic number, because the mean of its divisors is an integer number (1102749648).

Almost surely, 2^54139420692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54139420692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79397974656).

54139420692 is an abundant number, since it is smaller than the sum of its proper divisors (104656528620).

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

54139420692 is a wasteful number, since it uses less digits than its factorization.

54139420692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 54139420692 in words is "fifty-four billion, one hundred thirty-nine million, four hundred twenty thousand, six hundred ninety-two".