61399786002 has 16 divisors (see below), whose sum is σ = 122803537152. Its totient is φ = 20465934480.

The previous prime is 61399785983. The next prime is 61399786027. The reversal of 61399786002 is 20068799316.

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, 59628 + ... + 355464.

It is an arithmetic number, because the mean of its divisors is an integer number (7675221072).

Almost surely, 2^61399786002 is an apocalyptic number.

61399786002 is an abundant number, since it is smaller than the sum of its proper divisors (61403751150).

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

61399786002 is a wasteful number, since it uses less digits than its factorization.

61399786002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330433.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 61399786002 in words is "sixty-one billion, three hundred ninety-nine million, seven hundred eighty-six thousand, two".