61237873216 has 28 divisors (see below), whose sum is σ = 130866514492. Its totient is φ = 28263633408.

The previous prime is 61237873189. The next prime is 61237873223.

It is a happy number.

61237873216 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 17188258816 + 44049614400 = 131104^2 + 209880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36800775 + ... + 36802438.

It is an arithmetic number, because the mean of its divisors is an integer number (4673804089).

Almost surely, 2^61237873216 is an apocalyptic number.

It is an amenable number.

61237873216 is an abundant number, since it is smaller than the sum of its proper divisors (69628641276).

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

61237873216 is a wasteful number, since it uses less digits than its factorization.

61237873216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73603238 (or 73603228 counting only the distinct ones).

The product of its digits is 508032, while the sum is 46.

The spelling of 61237873216 in words is "sixty-one billion, two hundred thirty-seven million, eight hundred seventy-three thousand, two hundred sixteen".