50615389440 has 864 divisors, whose sum is σ = 223582334976. Its totient is φ = 10265149440.

The previous prime is 50615389403. The next prime is 50615389441. The reversal of 50615389440 is 4498351605.

50615389440 is a `hidden beast` number, since 50 + 6 + 153 + 8 + 9 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50615389441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38142057 + ... + 38143383.

Almost surely, 2^50615389440 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 50615389440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111791167488).

50615389440 is an abundant number, since it is smaller than the sum of its proper divisors (172966945536).

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

50615389440 is a wasteful number, since it uses less digits than its factorization.

50615389440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 50615389440 in words is "fifty billion, six hundred fifteen million, three hundred eighty-nine thousand, four hundred forty".