61671557127 has 8 divisors (see below), whose sum is σ = 85803905664. Its totient is φ = 39326790008.

The previous prime is 61671557063. The next prime is 61671557131. The reversal of 61671557127 is 72175517616.

61671557127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 61671557127 - 2⁶ = 61671557063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61671557327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446895273 + ... + 446895410.

It is an arithmetic number, because the mean of its divisors is an integer number (10725488208).

Almost surely, 2^61671557127 is an apocalyptic number.

61671557127 is a deficient number, since it is larger than the sum of its proper divisors (24132348537).

61671557127 is a wasteful number, since it uses less digits than its factorization.

61671557127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893790709.

The product of its digits is 617400, while the sum is 48.

The spelling of 61671557127 in words is "sixty-one billion, six hundred seventy-one million, five hundred fifty-seven thousand, one hundred twenty-seven".