266161333520254 has 4 divisors (see below), whose sum is σ = 399242000280384. Its totient is φ = 133080666760126.

The previous prime is 266161333520249. The next prime is 266161333520273. The reversal of 266161333520254 is 452025333161662.

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

It is a super-2 number, since 2×266161333520254² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266161333520198 and 266161333520207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66540333380062 + ... + 66540333380065.

It is an arithmetic number, because the mean of its divisors is an integer number (99810500070096).

Almost surely, 2^{266161333520254} is an apocalyptic number.

266161333520254 is a deficient number, since it is larger than the sum of its proper divisors (133080666760130).

266161333520254 is a wasteful number, since it uses less digits than its factorization.

266161333520254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133080666760129.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 266161333520254 in words is "two hundred sixty-six trillion, one hundred sixty-one billion, three hundred thirty-three million, five hundred twenty thousand, two hundred fifty-four".