2198431940761 has 8 divisors (see below), whose sum is σ = 2513194901504. Its totient is φ = 1883844293760.

The previous prime is 2198431940707. The next prime is 2198431940813. The reversal of 2198431940761 is 1670491348912.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198431940761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2198431980761) 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, 43801560 + ... + 43851721.

It is an arithmetic number, because the mean of its divisors is an integer number (314149362688).

Almost surely, 2^{2198431940761} is an apocalyptic number.

It is an amenable number.

2198431940761 is a deficient number, since it is larger than the sum of its proper divisors (314762960743).

2198431940761 is an equidigital number, since it uses as much as digits as its factorization.

2198431940761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87656871.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 2198431940761 in words is "two trillion, one hundred ninety-eight billion, four hundred thirty-one million, nine hundred forty thousand, seven hundred sixty-one".