61145998068 has 48 divisors (see below), whose sum is σ = 148238496000. Its totient is φ = 19593211008.

The previous prime is 61145998063. The next prime is 61145998093. The reversal of 61145998068 is 86089954116.

It is a junction number, because it is equal to n+sod(n) for n = 61145997999 and 61145998017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61145998061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303948 + ... + 463331.

It is an arithmetic number, because the mean of its divisors is an integer number (3088302000).

Almost surely, 2^61145998068 is an apocalyptic number.

It is an amenable number.

61145998068 is an abundant number, since it is smaller than the sum of its proper divisors (87092497932).

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

61145998068 is a wasteful number, since it uses less digits than its factorization.

61145998068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767544 (or 767542 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 61145998068 in words is "sixty-one billion, one hundred forty-five million, nine hundred ninety-eight thousand, sixty-eight".