215124542349 has 16 divisors (see below), whose sum is σ = 290474764800. Its totient is φ = 141606344880.

The previous prime is 215124542329. The next prime is 215124542357. The reversal of 215124542349 is 943245421512.

It is not a de Polignac number, because 215124542349 - 2⁵ = 215124542317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215124542349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215124542309) 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, 1297147 + ... + 1453560.

It is an arithmetic number, because the mean of its divisors is an integer number (18154672800).

Almost surely, 2^215124542349 is an apocalyptic number.

It is an amenable number.

215124542349 is a deficient number, since it is larger than the sum of its proper divisors (75350222451).

215124542349 is a wasteful number, since it uses less digits than its factorization.

215124542349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751040.

The product of its digits is 345600, while the sum is 42.

The spelling of 215124542349 in words is "two hundred fifteen billion, one hundred twenty-four million, five hundred forty-two thousand, three hundred forty-nine".