136221256606045 has 16 divisors (see below), whose sum is σ = 176595108323760. Its totient is φ = 100276826978304.

The previous prime is 136221256606021. The next prime is 136221256606069. The reversal of 136221256606045 is 540606652122631.

It is an interprime number because it is at equal distance from previous prime (136221256606021) and next prime (136221256606069).

It can be written as a sum of positive squares in 8 ways, for example, as 12535296032484 + 123685960573561 = 3540522^2 + 11121419^2 .

It is a cyclic number.

It is not a de Polignac number, because 136221256606045 - 2¹⁵ = 136221256573277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136221256606045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3305518260 + ... + 3305559469.

It is an arithmetic number, because the mean of its divisors is an integer number (11037194270235).

Almost surely, 2^{136221256606045} is an apocalyptic number.

It is an amenable number.

136221256606045 is a deficient number, since it is larger than the sum of its proper divisors (40373851717715).

136221256606045 is a wasteful number, since it uses less digits than its factorization.

136221256606045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611078064.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 136221256606045 in words is "one hundred thirty-six trillion, two hundred twenty-one billion, two hundred fifty-six million, six hundred six thousand, forty-five".