6611219961 has 8 divisors (see below), whose sum is σ = 8935713120. Its totient is φ = 4347103392.

The previous prime is 6611219957. The next prime is 6611219963. The reversal of 6611219961 is 1699121166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6611219961 - 2² = 6611219957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6611219963) 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, 15093891 + ... + 15094328.

It is an arithmetic number, because the mean of its divisors is an integer number (1116964140).

Almost surely, 2^6611219961 is an apocalyptic number.

It is an amenable number.

6611219961 is a deficient number, since it is larger than the sum of its proper divisors (2324493159).

6611219961 is a wasteful number, since it uses less digits than its factorization.

6611219961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30188295.

The product of its digits is 34992, while the sum is 42.

The square root of 6611219961 is about 81309.4088098050. The cubic root of 6611219961 is about 1876.8397904697.

The spelling of 6611219961 in words is "six billion, six hundred eleven million, two hundred nineteen thousand, nine hundred sixty-one".