215022253520144 has 40 divisors (see below), whose sum is σ = 477162543952128. Its totient is φ = 91950747966720.

The previous prime is 215022253520117. The next prime is 215022253520149. The reversal of 215022253520144 is 441025352220512.

It is a junction number, because it is equal to n+sod(n) for n = 215022253520098 and 215022253520107.

It is not an unprimeable number, because it can be changed into a prime (215022253520149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2100431912 + ... + 2100534279.

Almost surely, 2^{215022253520144} is an apocalyptic number.

It is an amenable number.

215022253520144 is an abundant number, since it is smaller than the sum of its proper divisors (262140290431984).

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

215022253520144 is a wasteful number, since it uses less digits than its factorization.

215022253520144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200966663 (or 4200966657 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 215022253520144 in words is "two hundred fifteen trillion, twenty-two billion, two hundred fifty-three million, five hundred twenty thousand, one hundred forty-four".