11215701450 has 216 divisors, whose sum is σ = 31629761280. Its totient is φ = 2958573600.

The previous prime is 11215701437. The next prime is 11215701503. The reversal of 11215701450 is 5410751211.

11215701450 is a `hidden beast` number, since 11 + 21 + 570 + 14 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 58720855 + ... + 58721045.

It is an arithmetic number, because the mean of its divisors is an integer number (146434080).

Almost surely, 2^11215701450 is an apocalyptic number.

11215701450 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 11215701450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15814880640).

11215701450 is an abundant number, since it is smaller than the sum of its proper divisors (20414059830).

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

11215701450 is an equidigital number, since it uses as much as digits as its factorization.

11215701450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The spelling of 11215701450 in words is "eleven billion, two hundred fifteen million, seven hundred one thousand, four hundred fifty".