61106637349 has 4 divisors (see below), whose sum is σ = 62597043180. Its totient is φ = 59616231520.

The previous prime is 61106637341. The next prime is 61106637353. The reversal of 61106637349 is 94373660116.

61106637349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31158604324 + 29948033025 = 176518^2 + 173055^2 .

It is a cyclic number.

It is not a de Polignac number, because 61106637349 - 2³ = 61106637341 is a prime.

It is a super-2 number, since 2×61106637349² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61106637299 and 61106637308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61106637341) 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, 745202854 + ... + 745202935.

It is an arithmetic number, because the mean of its divisors is an integer number (15649260795).

Almost surely, 2^61106637349 is an apocalyptic number.

It is an amenable number.

61106637349 is a deficient number, since it is larger than the sum of its proper divisors (1490405831).

61106637349 is a wasteful number, since it uses less digits than its factorization.

61106637349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490405830.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 61106637349 in words is "sixty-one billion, one hundred six million, six hundred thirty-seven thousand, three hundred forty-nine".