26540153446661 has 8 divisors (see below), whose sum is σ = 26605282485600. Its totient is φ = 26475047917552.

The previous prime is 26540153446567. The next prime is 26540153446687. The reversal of 26540153446661 is 16664435104562.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26540153446661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26540153446361) 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, 3615830 + ... + 8133543.

It is an arithmetic number, because the mean of its divisors is an integer number (3325660310700).

Almost surely, 2^{26540153446661} is an apocalyptic number.

It is an amenable number.

26540153446661 is a deficient number, since it is larger than the sum of its proper divisors (65129038939).

26540153446661 is a wasteful number, since it uses less digits than its factorization.

26540153446661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11754915.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 26540153446661 in words is "twenty-six trillion, five hundred forty billion, one hundred fifty-three million, four hundred forty-six thousand, six hundred sixty-one".