61450329533 has 16 divisors (see below), whose sum is σ = 63072362496. Its totient is φ = 59837384880.

The previous prime is 61450329497. The next prime is 61450329553. The reversal of 61450329533 is 33592305416.

It is a cyclic number.

It is not a de Polignac number, because 61450329533 - 2⁶ = 61450329469 is a prime.

It is a super-2 number, since 2×61450329533² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61450329553) 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 15 ways as a sum of consecutive naturals, for example, 36950660 + ... + 36952322.

It is an arithmetic number, because the mean of its divisors is an integer number (3942022656).

Almost surely, 2^61450329533 is an apocalyptic number.

It is an amenable number.

61450329533 is a deficient number, since it is larger than the sum of its proper divisors (1622032963).

61450329533 is a wasteful number, since it uses less digits than its factorization.

61450329533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 61450329533 in words is "sixty-one billion, four hundred fifty million, three hundred twenty-nine thousand, five hundred thirty-three".