219139546916 has 18 divisors (see below), whose sum is σ = 404740426230. Its totient is φ = 103802942592.

The previous prime is 219139546907. The next prime is 219139546957. The reversal of 219139546916 is 619645931912.

It can be written as a sum of positive squares in only one way, i.e., 143448532516 + 75691014400 = 378746^2 + 275120^2 .

It is a super-2 number, since 2×219139546916² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75877901 + ... + 75880788.

It is an arithmetic number, because the mean of its divisors is an integer number (22485579235).

Almost surely, 2^219139546916 is an apocalyptic number.

It is an amenable number.

219139546916 is a deficient number, since it is larger than the sum of its proper divisors (185600879314).

219139546916 is a wasteful number, since it uses less digits than its factorization.

219139546916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151758731 (or 151758710 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 56.

The spelling of 219139546916 in words is "two hundred nineteen billion, one hundred thirty-nine million, five hundred forty-six thousand, nine hundred sixteen".