61273237216 has 24 divisors (see below), whose sum is σ = 125876543184. Its totient is φ = 29304591360.

The previous prime is 61273237187. The next prime is 61273237229.

61273237216 is nontrivially palindromic in base 10.

It is a congruent number.

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, 41625105 + ... + 41626576.

It is an arithmetic number, because the mean of its divisors is an integer number (5244855966).

Almost surely, 2^61273237216 is an apocalyptic number.

It is an amenable number.

61273237216 is an abundant number, since it is smaller than the sum of its proper divisors (64603305968).

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

61273237216 is a wasteful number, since it uses less digits than its factorization.

61273237216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83251714 (or 83251706 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The spelling of 61273237216 in words is "sixty-one billion, two hundred seventy-three million, two hundred thirty-seven thousand, two hundred sixteen".