61345542211 has 4 divisors (see below), whose sum is σ = 61348836024. Its totient is φ = 61342248400.

The previous prime is 61345542173. The next prime is 61345542263. The reversal of 61345542211 is 11224554316.

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 61345542211 - 2¹¹ = 61345540163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61345542281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618810 + ... + 1656271.

It is an arithmetic number, because the mean of its divisors is an integer number (15337209006).

Almost surely, 2^61345542211 is an apocalyptic number.

61345542211 is a deficient number, since it is larger than the sum of its proper divisors (3293813).

61345542211 is a wasteful number, since it uses less digits than its factorization.

61345542211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293812.

The product of its digits is 28800, while the sum is 34.

The spelling of 61345542211 in words is "sixty-one billion, three hundred forty-five million, five hundred forty-two thousand, two hundred eleven".