15128383950 has 72 divisors (see below), whose sum is σ = 40676311728. Its totient is φ = 4031120640.

The previous prime is 15128383903. The next prime is 15128383961. The reversal of 15128383950 is 5938382151.

15128383950 is a `hidden beast` number, since 1 + 512 + 8 + 3 + 83 + 9 + 50 = 666.

15128383950 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 15128383896 and 15128383905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 602854 + ... + 627446.

It is an arithmetic number, because the mean of its divisors is an integer number (564948774).

Almost surely, 2^15128383950 is an apocalyptic number.

15128383950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15128383950 is an abundant number, since it is smaller than the sum of its proper divisors (25547927778).

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

15128383950 is a wasteful number, since it uses less digits than its factorization.

15128383950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25978 (or 25970 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 15128383950 in words is "fifteen billion, one hundred twenty-eight million, three hundred eighty-three thousand, nine hundred fifty".