15036121650 has 96 divisors (see below), whose sum is σ = 40893382656. Its totient is φ = 3625960000.

The previous prime is 15036121649. The next prime is 15036121651. The reversal of 15036121650 is 5612163051.

It is an interprime number because it is at equal distance from previous prime (15036121649) and next prime (15036121651).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (15036121651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 291295 + ... + 339005.

It is an arithmetic number, because the mean of its divisors is an integer number (425972736).

Almost surely, 2^15036121650 is an apocalyptic number.

15036121650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15036121650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20446691328).

15036121650 is an abundant number, since it is smaller than the sum of its proper divisors (25857261006).

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

15036121650 is a wasteful number, since it uses less digits than its factorization.

15036121650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47928 (or 47923 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 15036121650 in words is "fifteen billion, thirty-six million, one hundred twenty-one thousand, six hundred fifty".