61580608516 has 24 divisors (see below), whose sum is σ = 123261989760. Its totient is φ = 26370095232.

The previous prime is 61580608447. The next prime is 61580608561.

61580608516 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×61580608516³ (a number of 33 digits) contains 333 as substring.

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, 864901 + ... + 933388.

It is an arithmetic number, because the mean of its divisors is an integer number (5135916240).

Almost surely, 2^61580608516 is an apocalyptic number.

It is an amenable number.

61580608516 is an abundant number, since it is smaller than the sum of its proper divisors (61681381244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61580608516 is a wasteful number, since it uses less digits than its factorization.

61580608516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799523 (or 1799521 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 61580608516 in words is "sixty-one billion, five hundred eighty million, six hundred eight thousand, five hundred sixteen".