4015123132254 has 128 divisors (see below), whose sum is σ = 9476707508352. Its totient is φ = 1122694594560.

The previous prime is 4015123132231. The next prime is 4015123132357. The reversal of 4015123132254 is 4522313215104.

It is a super-2 number, since 2×4015123132254² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4892814 + ... + 5654190.

It is an arithmetic number, because the mean of its divisors is an integer number (74036777409).

Almost surely, 2^{4015123132254} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4015123132254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4738353754176).

4015123132254 is an abundant number, since it is smaller than the sum of its proper divisors (5461584376098).

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

4015123132254 is a wasteful number, since it uses less digits than its factorization.

4015123132254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761550.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 4015123132254 its reverse (4522313215104), we get a palindrome (8537436347358).

The spelling of 4015123132254 in words is "four trillion, fifteen billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred fifty-four".