61254166933 has 4 divisors (see below), whose sum is σ = 61254961740. Its totient is φ = 61253372128.

The previous prime is 61254166891. The next prime is 61254166951. The reversal of 61254166933 is 33966145216.

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 2768548689 + 58485618244 = 52617^2 + 241838^2 .

It is a cyclic number.

It is not a de Polignac number, because 61254166933 - 2²⁵ = 61220612501 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 (61254166033) 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, 267688 + ... + 440641.

It is an arithmetic number, because the mean of its divisors is an integer number (15313740435).

Almost surely, 2^61254166933 is an apocalyptic number.

It is an amenable number.

61254166933 is a deficient number, since it is larger than the sum of its proper divisors (794807).

61254166933 is an equidigital number, since it uses as much as digits as its factorization.

61254166933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794806.

The product of its digits is 699840, while the sum is 46.

The spelling of 61254166933 in words is "sixty-one billion, two hundred fifty-four million, one hundred sixty-six thousand, nine hundred thirty-three".