61185460641 has 8 divisors (see below), whose sum is σ = 81582996480. Its totient is φ = 40789115952.

The previous prime is 61185460613. The next prime is 61185460673. The reversal of 61185460641 is 14606458116.

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

It is not a de Polignac number, because 61185460641 - 2⁶ = 61185460577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61185460593 and 61185460602.

It is not an unprimeable number, because it can be changed into a prime (61185467641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170110 + ... + 388983.

It is an arithmetic number, because the mean of its divisors is an integer number (10197874560).

Almost surely, 2^61185460641 is an apocalyptic number.

It is an amenable number.

61185460641 is a deficient number, since it is larger than the sum of its proper divisors (20397535839).

61185460641 is a wasteful number, since it uses less digits than its factorization.

61185460641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595575.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 61185460641 in words is "sixty-one billion, one hundred eighty-five million, four hundred sixty thousand, six hundred forty-one".