61273711672 has 8 divisors (see below), whose sum is σ = 114888209400. Its totient is φ = 30636855832.

The previous prime is 61273711621. The next prime is 61273711673. The reversal of 61273711672 is 27611737216.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61273711673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3829606972 + ... + 3829606987.

It is an arithmetic number, because the mean of its divisors is an integer number (14361026175).

Almost surely, 2^61273711672 is an apocalyptic number.

It is an amenable number.

61273711672 is a deficient number, since it is larger than the sum of its proper divisors (53614497728).

61273711672 is a wasteful number, since it uses less digits than its factorization.

61273711672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659213965 (or 7659213961 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The spelling of 61273711672 in words is "sixty-one billion, two hundred seventy-three million, seven hundred eleven thousand, six hundred seventy-two".