61504067513 has 8 divisors (see below), whose sum is σ = 70338750528. Its totient is φ = 52681481424.

The previous prime is 61504067509. The next prime is 61504067561. The reversal of 61504067513 is 31576040516.

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 61504067513 - 2² = 61504067509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61504066513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3013331 + ... + 3033672.

It is an arithmetic number, because the mean of its divisors is an integer number (8792343816).

Almost surely, 2^61504067513 is an apocalyptic number.

It is an amenable number.

61504067513 is a deficient number, since it is larger than the sum of its proper divisors (8834683015).

61504067513 is a wasteful number, since it uses less digits than its factorization.

61504067513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6048463.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 61504067513 in words is "sixty-one billion, five hundred four million, sixty-seven thousand, five hundred thirteen".