61133458550 has 48 divisors (see below), whose sum is σ = 123553996800. Its totient is φ = 22419050400.

The previous prime is 61133458489. The next prime is 61133458553. The reversal of 61133458550 is 5585433116.

It is a junction number, because it is equal to n+sod(n) for n = 61133458498 and 61133458507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61133458553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1008470 + ... + 1067369.

It is an arithmetic number, because the mean of its divisors is an integer number (2574041600).

Almost surely, 2^61133458550 is an apocalyptic number.

61133458550 is an abundant number, since it is smaller than the sum of its proper divisors (62420538250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61133458550 is a wasteful number, since it uses less digits than its factorization.

61133458550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075901 (or 2075896 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 61133458550 in words is "sixty-one billion, one hundred thirty-three million, four hundred fifty-eight thousand, five hundred fifty".