26602626561 has 8 divisors (see below), whose sum is σ = 40537335744. Its totient is φ = 15201500880.

The previous prime is 26602626539. The next prime is 26602626577. The reversal of 26602626561 is 16562620662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26602626561 - 2¹⁷ = 26602495489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26602626581) 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, 633395850 + ... + 633395891.

It is an arithmetic number, because the mean of its divisors is an integer number (5067166968).

Almost surely, 2^26602626561 is an apocalyptic number.

26602626561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26602626561 is a deficient number, since it is larger than the sum of its proper divisors (13934709183).

26602626561 is a wasteful number, since it uses less digits than its factorization.

26602626561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266791751.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 26602626561 in words is "twenty-six billion, six hundred two million, six hundred twenty-six thousand, five hundred sixty-one".