54781070640 has 320 divisors, whose sum is σ = 190450953216. Its totient is φ = 12953419776.

The previous prime is 54781070639. The next prime is 54781070653. The reversal of 54781070640 is 4607018745.

It is a junction number, because it is equal to n+sod(n) for n = 54781070592 and 54781070601.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6282924 + ... + 6291636.

Almost surely, 2^54781070640 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 54781070640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95225476608).

54781070640 is an abundant number, since it is smaller than the sum of its proper divisors (135669882576).

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

54781070640 is a wasteful number, since it uses less digits than its factorization.

54781070640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8836 (or 8830 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 54781070640 in words is "fifty-four billion, seven hundred eighty-one million, seventy thousand, six hundred forty".