61540074233 has 16 divisors (see below), whose sum is σ = 68238139200. Its totient is φ = 55033318080.

The previous prime is 61540074227. The next prime is 61540074331. The reversal of 61540074233 is 33247004516.

It is a cyclic number.

It is not a de Polignac number, because 61540074233 - 2⁸ = 61540073977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61540074193 and 61540074202.

It is not an unprimeable number, because it can be changed into a prime (61540074203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17966 + ... + 351287.

It is an arithmetic number, because the mean of its divisors is an integer number (4264883700).

Almost surely, 2^61540074233 is an apocalyptic number.

It is an amenable number.

61540074233 is a deficient number, since it is larger than the sum of its proper divisors (6698064967).

61540074233 is a wasteful number, since it uses less digits than its factorization.

61540074233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369512.

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 61540074233 its reverse (33247004516), we get a palindrome (94787078749).

The spelling of 61540074233 in words is "sixty-one billion, five hundred forty million, seventy-four thousand, two hundred thirty-three".