126700853881 has 4 divisors (see below), whose sum is σ = 144800975872. Its totient is φ = 108600731892.

The previous prime is 126700853879. The next prime is 126700853891. The reversal of 126700853881 is 188358007621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188358007621 = 7 ⋅26908286803.

It is a cyclic number.

It is not a de Polignac number, because 126700853881 - 2¹ = 126700853879 is a prime.

It is a super-2 number, since 2×126700853881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126700853801) 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, 9050060985 + ... + 9050060998.

It is an arithmetic number, because the mean of its divisors is an integer number (36200243968).

Almost surely, 2^126700853881 is an apocalyptic number.

It is an amenable number.

126700853881 is a deficient number, since it is larger than the sum of its proper divisors (18100121991).

126700853881 is an equidigital number, since it uses as much as digits as its factorization.

126700853881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18100121990.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 126700853881 in words is "one hundred twenty-six billion, seven hundred million, eight hundred fifty-three thousand, eight hundred eighty-one".