61543847022 has 24 divisors (see below), whose sum is σ = 143183644776. Its totient is φ = 17583956208.

The previous prime is 61543847021. The next prime is 61543847041. The reversal of 61543847022 is 22074834516.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61543847021) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 104666113 + ... + 104666700.

It is an arithmetic number, because the mean of its divisors is an integer number (5965985199).

Almost surely, 2^61543847022 is an apocalyptic number.

61543847022 is an abundant number, since it is smaller than the sum of its proper divisors (81639797754).

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

61543847022 is a wasteful number, since it uses less digits than its factorization.

61543847022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209332832 (or 209332825 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 61543847022 in words is "sixty-one billion, five hundred forty-three million, eight hundred forty-seven thousand, twenty-two".