20015420440150 has 24 divisors (see below), whose sum is σ = 39418604492040. Its totient is φ = 7535217106560.

The previous prime is 20015420440109. The next prime is 20015420440157. The reversal of 20015420440150 is 5104402451002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015420440157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11773775880 + ... + 11773777579.

It is an arithmetic number, because the mean of its divisors is an integer number (1642441853835).

Almost surely, 2^{20015420440150} is an apocalyptic number.

20015420440150 is a deficient number, since it is larger than the sum of its proper divisors (19403184051890).

20015420440150 is a wasteful number, since it uses less digits than its factorization.

20015420440150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23547553488 (or 23547553483 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 20015420440150 its reverse (5104402451002), we get a palindrome (25119822891152).

The spelling of 20015420440150 in words is "twenty trillion, fifteen billion, four hundred twenty million, four hundred forty thousand, one hundred fifty".