266153087380 has 24 divisors (see below), whose sum is σ = 567263598048. Its totient is φ = 104872260768.

The previous prime is 266153087377. The next prime is 266153087381. The reversal of 266153087380 is 83780351662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266153087381) 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, 99309514 + ... + 99312193.

It is an arithmetic number, because the mean of its divisors is an integer number (23635983252).

Almost surely, 2^266153087380 is an apocalyptic number.

266153087380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266153087380 is an abundant number, since it is smaller than the sum of its proper divisors (301110510668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266153087380 is a wasteful number, since it uses less digits than its factorization.

266153087380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198621783 (or 198621781 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 266153087380 in words is "two hundred sixty-six billion, one hundred fifty-three million, eighty-seven thousand, three hundred eighty".