26521444454064 has 160 divisors (see below), whose sum is σ = 80750083092480. Its totient is φ = 7344204806400.

The previous prime is 26521444454059. The next prime is 26521444454083. The reversal of 26521444454064 is 46045444412562.

It is a super-2 number, since 2×26521444454064² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26521444453998 and 26521444454016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8013942 + ... + 10828949.

It is an arithmetic number, because the mean of its divisors is an integer number (504688019328).

Almost surely, 2^{26521444454064} is an apocalyptic number.

26521444454064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26521444454064 is an abundant number, since it is smaller than the sum of its proper divisors (54228638638416).

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

26521444454064 is a wasteful number, since it uses less digits than its factorization.

26521444454064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18843039 (or 18843033 counting only the distinct ones).

The product of its (nonzero) digits is 14745600, while the sum is 51.

The spelling of 26521444454064 in words is "twenty-six trillion, five hundred twenty-one billion, four hundred forty-four million, four hundred fifty-four thousand, sixty-four".