61864909835211 has 96 divisors (see below), whose sum is σ = 105406038786048. Its totient is φ = 34230708449280.

The previous prime is 61864909835171. The next prime is 61864909835221. The reversal of 61864909835211 is 11253890946816.

61864909835211 is a `hidden beast` number, since 6 + 1 + 8 + 6 + 490 + 9 + 83 + 52 + 11 = 666.

61864909835211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61864909835211 - 2¹¹ = 61864909833163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (61864909835221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 446154451 + ... + 446293091.

It is an arithmetic number, because the mean of its divisors is an integer number (1097979570688).

Almost surely, 2^{61864909835211} is an apocalyptic number.

61864909835211 is a deficient number, since it is larger than the sum of its proper divisors (43541128950837).

61864909835211 is a wasteful number, since it uses less digits than its factorization.

61864909835211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140121 (or 140118 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 61864909835211 in words is "sixty-one trillion, eight hundred sixty-four billion, nine hundred nine million, eight hundred thirty-five thousand, two hundred eleven".