61540023333 has 8 divisors (see below), whose sum is σ = 84700247296. Its totient is φ = 39703240800.

The previous prime is 61540023331. The next prime is 61540023361. The reversal of 61540023333 is 33332004516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61540023333 - 2¹ = 61540023331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61540023333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61540023331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330860248 + ... + 330860433.

It is an arithmetic number, because the mean of its divisors is an integer number (10587530912).

Almost surely, 2^61540023333 is an apocalyptic number.

It is an amenable number.

61540023333 is a deficient number, since it is larger than the sum of its proper divisors (23160223963).

61540023333 is a wasteful number, since it uses less digits than its factorization.

61540023333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661720715.

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 61540023333 its reverse (33332004516), we get a palindrome (94872027849).

The spelling of 61540023333 in words is "sixty-one billion, five hundred forty million, twenty-three thousand, three hundred thirty-three".