826450216988 has 24 divisors (see below), whose sum is σ = 1580099182704. Its totient is φ = 375104288000.

The previous prime is 826450216981. The next prime is 826450217029. The reversal of 826450216988 is 889612054628.

It is a super-2 number, since 2×826450216988² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826450216981) 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, 13842413 + ... + 13901988.

It is an arithmetic number, because the mean of its divisors is an integer number (65837465946).

Almost surely, 2^826450216988 is an apocalyptic number.

It is an amenable number.

826450216988 is a deficient number, since it is larger than the sum of its proper divisors (753648965716).

826450216988 is a wasteful number, since it uses less digits than its factorization.

826450216988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27745093 (or 27745091 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 59.

The spelling of 826450216988 in words is "eight hundred twenty-six billion, four hundred fifty million, two hundred sixteen thousand, nine hundred eighty-eight".