219549245342 has 16 divisors (see below), whose sum is σ = 379887615360. Its totient is φ = 93213163608.

The previous prime is 219549245089. The next prime is 219549245353. The reversal of 219549245342 is 243542945912.

It is a super-2 number, since 2×219549245342² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73279292 + ... + 73282287.

It is an arithmetic number, because the mean of its divisors is an integer number (23742975960).

Almost surely, 2^219549245342 is an apocalyptic number.

219549245342 is a deficient number, since it is larger than the sum of its proper divisors (160338370018).

219549245342 is a wasteful number, since it uses less digits than its factorization.

219549245342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146561695.

The product of its digits is 3110400, while the sum is 50.

The spelling of 219549245342 in words is "two hundred nineteen billion, five hundred forty-nine million, two hundred forty-five thousand, three hundred forty-two".