263609676930 has 64 divisors (see below), whose sum is σ = 642985550208. Its totient is φ = 69151864320.

The previous prime is 263609676881. The next prime is 263609676943. The reversal of 263609676930 is 39676906362.

It is a super-2 number, since 2×263609676930² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1383870 + ... + 1562790.

It is an arithmetic number, because the mean of its divisors is an integer number (10046649222).

Almost surely, 2^263609676930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263609676930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321492775104).

263609676930 is an abundant number, since it is smaller than the sum of its proper divisors (379375873278).

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

263609676930 is a wasteful number, since it uses less digits than its factorization.

263609676930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179731.

The product of its (nonzero) digits is 13226976, while the sum is 57.

The spelling of 263609676930 in words is "two hundred sixty-three billion, six hundred nine million, six hundred seventy-six thousand, nine hundred thirty".