61638069483 has 12 divisors (see below), whose sum is σ = 89112488608. Its totient is φ = 41055251760.

The previous prime is 61638069473. The next prime is 61638069497. The reversal of 61638069483 is 38496083616.

It is not a de Polignac number, because 61638069483 - 2¹² = 61638065387 is a prime.

It is a super-2 number, since 2×61638069483² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61638069473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3055603 + ... + 3075708.

Almost surely, 2^61638069483 is an apocalyptic number.

61638069483 is a deficient number, since it is larger than the sum of its proper divisors (27474419125).

61638069483 is a wasteful number, since it uses less digits than its factorization.

61638069483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132434 (or 6132431 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 61638069483 in words is "sixty-one billion, six hundred thirty-eight million, sixty-nine thousand, four hundred eighty-three".