126251152621 has 8 divisors (see below), whose sum is σ = 137748337344. Its totient is φ = 114757269120.

The previous prime is 126251152619. The next prime is 126251152669.

126251152621 is nontrivially palindromic in base 10.

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 126251152621 - 2¹ = 126251152619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126251152421) 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, 744996 + ... + 898621.

It is an arithmetic number, because the mean of its divisors is an integer number (17218542168).

Almost surely, 2^126251152621 is an apocalyptic number.

126251152621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126251152621 is a deficient number, since it is larger than the sum of its proper divisors (11497184723).

126251152621 is a wasteful number, since it uses less digits than its factorization.

126251152621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650611.

The product of its digits is 14400, while the sum is 34.

It can be divided in two parts, 126251 and 152621, that added together give a palindrome (278872).

The spelling of 126251152621 in words is "one hundred twenty-six billion, two hundred fifty-one million, one hundred fifty-two thousand, six hundred twenty-one".