61140552986 has 16 divisors (see below), whose sum is σ = 94529566536. Its totient is φ = 29636663616.

The previous prime is 61140552919. The next prime is 61140552997. The reversal of 61140552986 is 68925504116.

It can be written as a sum of positive squares in 4 ways, for example, as 49425737761 + 11714815225 = 222319^2 + 108235^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61140552986.

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 7 ways as a sum of consecutive naturals, for example, 1470881 + ... + 1511876.

Almost surely, 2^61140552986 is an apocalyptic number.

61140552986 is a deficient number, since it is larger than the sum of its proper divisors (33389013550).

61140552986 is a wasteful number, since it uses less digits than its factorization.

61140552986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983073.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 61140552986 in words is "sixty-one billion, one hundred forty million, five hundred fifty-two thousand, nine hundred eighty-six".