61533233516 has 6 divisors (see below), whose sum is σ = 107683158660. Its totient is φ = 30766616756.

The previous prime is 61533233401. The next prime is 61533233519.

61533233516 is nontrivially palindromic in base 10.

61533233516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61533233516.

It is not an unprimeable number, because it can be changed into a prime (61533233519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7691654186 + ... + 7691654193.

It is an arithmetic number, because the mean of its divisors is an integer number (17947193110).

Almost surely, 2^61533233516 is an apocalyptic number.

It is an amenable number.

61533233516 is a deficient number, since it is larger than the sum of its proper divisors (46149925144).

61533233516 is a wasteful number, since it uses less digits than its factorization.

61533233516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15383308383 (or 15383308381 counting only the distinct ones).

The product of its digits is 145800, while the sum is 38.

The spelling of 61533233516 in words is "sixty-one billion, five hundred thirty-three million, two hundred thirty-three thousand, five hundred sixteen".