44778504672 has 384 divisors, whose sum is σ = 151408051200. Its totient is φ = 12744345600.

The previous prime is 44778504671. The next prime is 44778504751. The reversal of 44778504672 is 27640587744.

44778504672 is a `hidden beast` number, since 4 + 4 + 7 + 78 + 504 + 67 + 2 = 666.

It is a super-2 number, since 2×44778504672² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44778504671) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10195597 + ... + 10199987.

It is an arithmetic number, because the mean of its divisors is an integer number (394291800).

Almost surely, 2^44778504672 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 44778504672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75704025600).

44778504672 is an abundant number, since it is smaller than the sum of its proper divisors (106629546528).

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

44778504672 is a wasteful number, since it uses less digits than its factorization.

44778504672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487 (or 4473 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 54.

The spelling of 44778504672 in words is "forty-four billion, seven hundred seventy-eight million, five hundred four thousand, six hundred seventy-two".