126086561871 has 4 divisors (see below), whose sum is σ = 168115415832. Its totient is φ = 84057707912.

The previous prime is 126086561863. The next prime is 126086561879. The reversal of 126086561871 is 178165680621.

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

It is an interprime number because it is at equal distance from previous prime (126086561863) and next prime (126086561879).

It is a cyclic number.

It is not a de Polignac number, because 126086561871 - 2³ = 126086561863 is a prime.

It is a super-2 number, since 2×126086561871² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126086561879) 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, 21014426976 + ... + 21014426981.

It is an arithmetic number, because the mean of its divisors is an integer number (42028853958).

Almost surely, 2^126086561871 is an apocalyptic number.

126086561871 is a deficient number, since it is larger than the sum of its proper divisors (42028853961).

126086561871 is an equidigital number, since it uses as much as digits as its factorization.

126086561871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42028853960.

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 126086561871 in words is "one hundred twenty-six billion, eighty-six million, five hundred sixty-one thousand, eight hundred seventy-one".