398266758611 has 4 divisors (see below), whose sum is σ = 398594012712. Its totient is φ = 397939504512.

The previous prime is 398266758601. The next prime is 398266758623. The reversal of 398266758611 is 116857662893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398266758611 is a prime.

It is a super-2 number, since 2×398266758611² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398266758601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163625225 + ... + 163627658.

It is an arithmetic number, because the mean of its divisors is an integer number (99648503178).

Almost surely, 2^398266758611 is an apocalyptic number.

398266758611 is a deficient number, since it is larger than the sum of its proper divisors (327254101).

398266758611 is a wasteful number, since it uses less digits than its factorization.

398266758611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327254100.

The product of its digits is 26127360, while the sum is 62.

The spelling of 398266758611 in words is "three hundred ninety-eight billion, two hundred sixty-six million, seven hundred fifty-eight thousand, six hundred eleven".