61670533960 has 128 divisors (see below), whose sum is σ = 161372528640. Its totient is φ = 20772864000.

The previous prime is 61670533937. The next prime is 61670533961. The reversal of 61670533960 is 6933507616.

It is a self number, because there is not a number n which added to its sum of digits gives 61670533960.

It is not an unprimeable number, because it can be changed into a prime (61670533961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19657512 + ... + 19660648.

It is an arithmetic number, because the mean of its divisors is an integer number (1260722880).

Almost surely, 2^61670533960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61670533960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80686264320).

61670533960 is an abundant number, since it is smaller than the sum of its proper divisors (99701994680).

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

61670533960 is a wasteful number, since it uses less digits than its factorization.

61670533960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367 (or 4363 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 61670533960 in words is "sixty-one billion, six hundred seventy million, five hundred thirty-three thousand, nine hundred sixty".