61006155650 has 48 divisors (see below), whose sum is σ = 129169107648. Its totient is φ = 21219528000.

The previous prime is 61006155611. The next prime is 61006155667. The reversal of 61006155650 is 5655160016.

It is a self number, because there is not a number n which added to its sum of digits gives 61006155650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2398661 + ... + 2423960.

It is an arithmetic number, because the mean of its divisors is an integer number (2691023076).

Almost surely, 2^61006155650 is an apocalyptic number.

61006155650 is an abundant number, since it is smaller than the sum of its proper divisors (68162951998).

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

61006155650 is a wasteful number, since it uses less digits than its factorization.

61006155650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822667 (or 4822662 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 61006155650 in words is "sixty-one billion, six million, one hundred fifty-five thousand, six hundred fifty".