61291208000 has 112 divisors (see below), whose sum is σ = 165586794048. Its totient is φ = 22287680000.

The previous prime is 61291207993. The next prime is 61291208029. The reversal of 61291208000 is 80219216.

It is a super-2 number, since 2×61291208000² (a number of 22 digits) contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 260246 + ... + 436245.

Almost surely, 2^61291208000 is an apocalyptic number.

It is an amenable number.

61291208000 is an abundant number, since it is smaller than the sum of its proper divisors (104295586048).

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

61291208000 is a wasteful number, since it uses less digits than its factorization.

61291208000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696529 (or 696509 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 61291208000 in words is "sixty-one billion, two hundred ninety-one million, two hundred eight thousand".