61285438053 has 32 divisors (see below), whose sum is σ = 104197939200. Its totient is φ = 34873696368.

The previous prime is 61285438037. The next prime is 61285438061. The reversal of 61285438053 is 35083458216.

61285438053 is a `hidden beast` number, since 6 + 1 + 28 + 543 + 80 + 5 + 3 = 666.

It is not a de Polignac number, because 61285438053 - 2⁴ = 61285438037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61285438033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633201 + ... + 723542.

It is an arithmetic number, because the mean of its divisors is an integer number (3256185600).

Almost surely, 2^61285438053 is an apocalyptic number.

61285438053 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61285438053 is a deficient number, since it is larger than the sum of its proper divisors (42912501147).

61285438053 is a wasteful number, since it uses less digits than its factorization.

61285438053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356998 (or 1356992 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 61285438053 in words is "sixty-one billion, two hundred eighty-five million, four hundred thirty-eight thousand, fifty-three".