61355591126 has 4 divisors (see below), whose sum is σ = 92033386692. Its totient is φ = 30677795562.

The previous prime is 61355591113. The next prime is 61355591161. The reversal of 61355591126 is 62119555316.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15338897780 + ... + 15338897783.

It is an arithmetic number, because the mean of its divisors is an integer number (23008346673).

Almost surely, 2^61355591126 is an apocalyptic number.

61355591126 is a deficient number, since it is larger than the sum of its proper divisors (30677795566).

61355591126 is a wasteful number, since it uses less digits than its factorization.

61355591126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30677795565.

The product of its digits is 243000, while the sum is 44.

The spelling of 61355591126 in words is "sixty-one billion, three hundred fifty-five million, five hundred ninety-one thousand, one hundred twenty-six".