61723064233 has 4 divisors (see below), whose sum is σ = 61723590480. Its totient is φ = 61722537988.

The previous prime is 61723064159. The next prime is 61723064237. The reversal of 61723064233 is 33246032716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61723064233 - 2¹³ = 61723056041 is a prime.

It is a super-2 number, since 2×61723064233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61723064192 and 61723064201.

It is not an unprimeable number, because it can be changed into a prime (61723064237) 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, 1566 + ... + 351352.

It is an arithmetic number, because the mean of its divisors is an integer number (15430897620).

Almost surely, 2^61723064233 is an apocalyptic number.

It is an amenable number.

61723064233 is a deficient number, since it is larger than the sum of its proper divisors (526247).

61723064233 is a wasteful number, since it uses less digits than its factorization.

61723064233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526246.

The product of its (nonzero) digits is 108864, while the sum is 37.

Adding to 61723064233 its reverse (33246032716), we get a palindrome (94969096949).

The spelling of 61723064233 in words is "sixty-one billion, seven hundred twenty-three million, sixty-four thousand, two hundred thirty-three".