61533500141 has 4 divisors (see below), whose sum is σ = 61624392252. Its totient is φ = 61442608032.

The previous prime is 61533500113. The next prime is 61533500153. The reversal of 61533500141 is 14100533516.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46263708100 + 15269792041 = 215090^2 + 123571^2 .

It is a cyclic number.

It is not a de Polignac number, because 61533500141 - 2²⁶ = 61466391277 is a prime.

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 (61533505141) 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, 45445040 + ... + 45446393.

It is an arithmetic number, because the mean of its divisors is an integer number (15406098063).

Almost surely, 2^61533500141 is an apocalyptic number.

It is an amenable number.

61533500141 is a deficient number, since it is larger than the sum of its proper divisors (90892111).

61533500141 is an equidigital number, since it uses as much as digits as its factorization.

61533500141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90892110.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 61533500141 in words is "sixty-one billion, five hundred thirty-three million, five hundred thousand, one hundred forty-one".