61152521503 has 4 divisors (see below), whose sum is σ = 61746235408. Its totient is φ = 60558807600.

The previous prime is 61152521501. The next prime is 61152521537. The reversal of 61152521503 is 30512525116.

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 61152521503 - 2¹ = 61152521501 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 (61152521501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296856798 + ... + 296857003.

It is an arithmetic number, because the mean of its divisors is an integer number (15436558852).

Almost surely, 2^61152521503 is an apocalyptic number.

61152521503 is a deficient number, since it is larger than the sum of its proper divisors (593713905).

61152521503 is a wasteful number, since it uses less digits than its factorization.

61152521503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593713904.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 61152521503 in words is "sixty-one billion, one hundred fifty-two million, five hundred twenty-one thousand, five hundred three".