61555869532 has 12 divisors (see below), whose sum is σ = 108711054760. Its totient is φ = 30495568176.

The previous prime is 61555869527. The next prime is 61555869559. The reversal of 61555869532 is 23596855516.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70591158 + ... + 70592029.

Almost surely, 2^61555869532 is an apocalyptic number.

It is an amenable number.

61555869532 is a deficient number, since it is larger than the sum of its proper divisors (47155185228).

61555869532 is a wasteful number, since it uses less digits than its factorization.

61555869532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141183300 (or 141183298 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 55.

The spelling of 61555869532 in words is "sixty-one billion, five hundred fifty-five million, eight hundred sixty-nine thousand, five hundred thirty-two".