61534526603523 has 4 divisors (see below), whose sum is σ = 82046035471368. Its totient is φ = 41023017735680.

The previous prime is 61534526603513. The next prime is 61534526603591. The reversal of 61534526603523 is 32530662543516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61534526603523 - 2⁴ = 61534526603507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61534526603513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10255754433918 + ... + 10255754433923.

It is an arithmetic number, because the mean of its divisors is an integer number (20511508867842).

Almost surely, 2^{61534526603523} is an apocalyptic number.

61534526603523 is a deficient number, since it is larger than the sum of its proper divisors (20511508867845).

61534526603523 is a wasteful number, since it uses less digits than its factorization.

61534526603523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20511508867844.

The product of its (nonzero) digits is 11664000, while the sum is 51.

The spelling of 61534526603523 in words is "sixty-one trillion, five hundred thirty-four billion, five hundred twenty-six million, six hundred three thousand, five hundred twenty-three".