61838672652 has 72 divisors (see below), whose sum is σ = 164002197632. Its totient is φ = 19620921600.

The previous prime is 61838672617. The next prime is 61838672657. The reversal of 61838672652 is 25627683816.

It is a super-2 number, since 2×61838672652² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61838672657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386113 + ... + 522264.

Almost surely, 2^61838672652 is an apocalyptic number.

61838672652 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

61838672652 is an abundant number, since it is smaller than the sum of its proper divisors (102163524980).

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

61838672652 is a wasteful number, since it uses less digits than its factorization.

61838672652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908479 (or 908474 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 61838672652 in words is "sixty-one billion, eight hundred thirty-eight million, six hundred seventy-two thousand, six hundred fifty-two".