15384920064 has 240 divisors, whose sum is σ = 44290498560. Its totient is φ = 4736286720.

The previous prime is 15384920059. The next prime is 15384920093. The reversal of 15384920064 is 46002948351.

It is a junction number, because it is equal to n+sod(n) for n = 15384919998 and 15384920025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35045157 + ... + 35045595.

It is an arithmetic number, because the mean of its divisors is an integer number (184543744).

Almost surely, 2^15384920064 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 15384920064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22145249280).

15384920064 is an abundant number, since it is smaller than the sum of its proper divisors (28905578496).

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

15384920064 is an equidigital number, since it uses as much as digits as its factorization.

15384920064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 15384920064 in words is "fifteen billion, three hundred eighty-four million, nine hundred twenty thousand, sixty-four".