61028793069993 has 60 divisors (see below), whose sum is σ = 106211234564292. Its totient is φ = 34820835698880.

The previous prime is 61028793069971. The next prime is 61028793069997. The reversal of 61028793069993 is 39996039782016.

61028793069993 is a `hidden beast` number, since 61 + 0 + 28 + 79 + 306 + 99 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54031143945744 + 6997649124249 = 7350588^2 + 2645307^2 .

It is not a de Polignac number, because 61028793069993 - 2¹³ = 61028793061801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61028793069997) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9007630 + ... + 14254647.

Almost surely, 2^{61028793069993} is an apocalyptic number.

61028793069993 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61028793069993 is a deficient number, since it is larger than the sum of its proper divisors (45182441494299).

61028793069993 is a wasteful number, since it uses less digits than its factorization.

61028793069993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23262964 (or 23262948 counting only the distinct ones).

The product of its (nonzero) digits is 238085568, while the sum is 72.

The spelling of 61028793069993 in words is "sixty-one trillion, twenty-eight billion, seven hundred ninety-three million, sixty-nine thousand, nine hundred ninety-three".