61869576620 has 36 divisors (see below), whose sum is σ = 138018407520. Its totient is φ = 23292073728.

The previous prime is 61869576611. The next prime is 61869576641. The reversal of 61869576620 is 2667596816.

It is a happy number.

It is a super-2 number, since 2×61869576620² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5346260 + ... + 5357819.

Almost surely, 2^61869576620 is an apocalyptic number.

It is an amenable number.

61869576620 is an abundant number, since it is smaller than the sum of its proper divisors (76148830900).

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

61869576620 is a wasteful number, since it uses less digits than its factorization.

61869576620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10704122 (or 10704103 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 61869576620 in words is "sixty-one billion, eight hundred sixty-nine million, five hundred seventy-six thousand, six hundred twenty".