61178234545 has 8 divisors (see below), whose sum is σ = 73544282496. Its totient is φ = 48855653616.

The previous prime is 61178234471. The next prime is 61178234561. The reversal of 61178234545 is 54543287116.

61178234545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 61178234545 - 2¹³ = 61178226353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61178234495 and 61178234504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10863657 + ... + 10869286.

It is an arithmetic number, because the mean of its divisors is an integer number (9193035312).

Almost surely, 2^61178234545 is an apocalyptic number.

It is an amenable number.

61178234545 is a deficient number, since it is larger than the sum of its proper divisors (12366047951).

61178234545 is a wasteful number, since it uses less digits than its factorization.

61178234545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21733511.

The product of its digits is 806400, while the sum is 46.

The spelling of 61178234545 in words is "sixty-one billion, one hundred seventy-eight million, two hundred thirty-four thousand, five hundred forty-five".