4215128291412 has 48 divisors (see below), whose sum is σ = 10313823656640. Its totient is φ = 1338009539328.

The previous prime is 4215128291411. The next prime is 4215128291449. The reversal of 4215128291412 is 2141928215124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4215128291411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82936498 + ... + 82987305.

It is an arithmetic number, because the mean of its divisors is an integer number (214871326180).

Almost surely, 2^{4215128291412} is an apocalyptic number.

It is an amenable number.

4215128291412 is an abundant number, since it is smaller than the sum of its proper divisors (6098695365228).

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

4215128291412 is a wasteful number, since it uses less digits than its factorization.

4215128291412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165923912 (or 165923910 counting only the distinct ones).

The product of its digits is 92160, while the sum is 42.

The spelling of 4215128291412 in words is "four trillion, two hundred fifteen billion, one hundred twenty-eight million, two hundred ninety-one thousand, four hundred twelve".