126211534465 has 4 divisors (see below), whose sum is σ = 151453841364. Its totient is φ = 100969227568.

The previous prime is 126211534447. The next prime is 126211534523. The reversal of 126211534465 is 564435112621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564435112621 = 2437 ⋅231610633.

It can be written as a sum of positive squares in 2 ways, for example, as 23522050161 + 102689484304 = 153369^2 + 320452^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126211534465 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12621153442 + ... + 12621153451.

It is an arithmetic number, because the mean of its divisors is an integer number (37863460341).

Almost surely, 2^126211534465 is an apocalyptic number.

It is an amenable number.

126211534465 is a deficient number, since it is larger than the sum of its proper divisors (25242306899).

126211534465 is an equidigital number, since it uses as much as digits as its factorization.

126211534465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25242306898.

The product of its digits is 172800, while the sum is 40.

The spelling of 126211534465 in words is "one hundred twenty-six billion, two hundred eleven million, five hundred thirty-four thousand, four hundred sixty-five".