61671557126 has 8 divisors (see below), whose sum is σ = 92695743144. Its totient is φ = 30772976080.

The previous prime is 61671557063. The next prime is 61671557131. The reversal of 61671557126 is 62175517616.

It is a happy number.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31400015 + ... + 31401978.

It is an arithmetic number, because the mean of its divisors is an integer number (11586967893).

Almost surely, 2^61671557126 is an apocalyptic number.

61671557126 is a deficient number, since it is larger than the sum of its proper divisors (31024186018).

61671557126 is a wasteful number, since it uses less digits than its factorization.

61671557126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62802486.

The product of its digits is 529200, while the sum is 47.

The spelling of 61671557126 in words is "sixty-one billion, six hundred seventy-one million, five hundred fifty-seven thousand, one hundred twenty-six".