61459187945 has 8 divisors (see below), whose sum is σ = 73850291136. Its totient is φ = 49101173296.

The previous prime is 61459187939. The next prime is 61459187983. The reversal of 61459187945 is 54978195416.

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 61459187945 - 2²⁶ = 61392079081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 8268047 + ... + 8275476.

It is an arithmetic number, because the mean of its divisors is an integer number (9231286392).

Almost surely, 2^61459187945 is an apocalyptic number.

It is an amenable number.

61459187945 is a deficient number, since it is larger than the sum of its proper divisors (12391103191).

61459187945 is a wasteful number, since it uses less digits than its factorization.

61459187945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16544271.

The product of its digits is 10886400, while the sum is 59.

The spelling of 61459187945 in words is "sixty-one billion, four hundred fifty-nine million, one hundred eighty-seven thousand, nine hundred forty-five".