61047250553 has 32 divisors (see below), whose sum is σ = 65830195200. Its totient is φ = 56442282624.

The previous prime is 61047250549. The next prime is 61047250577. The reversal of 61047250553 is 35505274016.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61047250553 - 2² = 61047250549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61047250153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63130076 + ... + 63131042.

It is an arithmetic number, because the mean of its divisors is an integer number (2057193600).

Almost surely, 2^61047250553 is an apocalyptic number.

It is an amenable number.

61047250553 is a deficient number, since it is larger than the sum of its proper divisors (4782944647).

61047250553 is a wasteful number, since it uses less digits than its factorization.

61047250553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 61047250553 in words is "sixty-one billion, forty-seven million, two hundred fifty thousand, five hundred fifty-three".