54399992739840 has 1344 divisors, whose sum is σ = 214826330234880. Its totient is φ = 13105603215360.

The previous prime is 54399992739839. The next prime is 54399992739863. The reversal of 54399992739840 is 4893729999345.

54399992739840 is a `hidden beast` number, since 5 + 439 + 9 + 9 + 92 + 7 + 3 + 98 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 54399992739840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 13713129537 + ... + 13713133503.

It is an arithmetic number, because the mean of its divisors is an integer number (159841019520).

Almost surely, 2^{54399992739840} 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 54399992739840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107413165117440).

54399992739840 is an abundant number, since it is smaller than the sum of its proper divisors (160426337495040).

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

54399992739840 is a wasteful number, since it uses less digits than its factorization.

54399992739840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190 (or 4155 counting only the distinct ones).

The product of its (nonzero) digits is 4761711360, while the sum is 81.

The spelling of 54399992739840 in words is "fifty-four trillion, three hundred ninety-nine billion, nine hundred ninety-two million, seven hundred thirty-nine thousand, eight hundred forty".