61211343406 has 8 divisors (see below), whose sum is σ = 93322212264. Its totient is φ = 30103939320.

The previous prime is 61211343373. The next prime is 61211343439. The reversal of 61211343406 is 60434311216.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61211343373) and next prime (61211343439).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 250866040 + ... + 250866283.

It is an arithmetic number, because the mean of its divisors is an integer number (11665276533).

Almost surely, 2^61211343406 is an apocalyptic number.

61211343406 is a deficient number, since it is larger than the sum of its proper divisors (32110868858).

61211343406 is a wasteful number, since it uses less digits than its factorization.

61211343406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501732386.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 61211343406 in words is "sixty-one billion, two hundred eleven million, three hundred forty-three thousand, four hundred six".