61447909242 has 16 divisors (see below), whose sum is σ = 125214608160. Its totient is φ = 20096171472.

The previous prime is 61447909231. The next prime is 61447909261. The reversal of 61447909242 is 24290974416.

It is a junction number, because it is equal to n+sod(n) for n = 61447909191 and 61447909200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96615892 + ... + 96616527.

It is an arithmetic number, because the mean of its divisors is an integer number (7825913010).

Almost surely, 2^61447909242 is an apocalyptic number.

61447909242 is an abundant number, since it is smaller than the sum of its proper divisors (63766698918).

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

61447909242 is a wasteful number, since it uses less digits than its factorization.

61447909242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193232477.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 61447909242 in words is "sixty-one billion, four hundred forty-seven million, nine hundred nine thousand, two hundred forty-two".