61405650211 has 4 divisors (see below), whose sum is σ = 62833688632. Its totient is φ = 59977611792.

The previous prime is 61405650209. The next prime is 61405650221. The reversal of 61405650211 is 11205650416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61405650211 - 2¹ = 61405650209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61405650221) 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 3 ways as a sum of consecutive naturals, for example, 714019146 + ... + 714019231.

It is an arithmetic number, because the mean of its divisors is an integer number (15708422158).

Almost surely, 2^61405650211 is an apocalyptic number.

61405650211 is a deficient number, since it is larger than the sum of its proper divisors (1428038421).

61405650211 is a wasteful number, since it uses less digits than its factorization.

61405650211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428038420.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 61405650211 in words is "sixty-one billion, four hundred five million, six hundred fifty thousand, two hundred eleven".