61867212460 has 12 divisors (see below), whose sum is σ = 129921146208. Its totient is φ = 24746884976.

The previous prime is 61867212431. The next prime is 61867212467. The reversal of 61867212460 is 6421276816.

It is not an unprimeable number, because it can be changed into a prime (61867212467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1546680292 + ... + 1546680331.

It is an arithmetic number, because the mean of its divisors is an integer number (10826762184).

Almost surely, 2^61867212460 is an apocalyptic number.

It is an amenable number.

61867212460 is an abundant number, since it is smaller than the sum of its proper divisors (68053933748).

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

61867212460 is a wasteful number, since it uses less digits than its factorization.

61867212460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093360632 (or 3093360630 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 61867212460 in words is "sixty-one billion, eight hundred sixty-seven million, two hundred twelve thousand, four hundred sixty".