126820699489 has 8 divisors (see below), whose sum is σ = 138646111968. Its totient is φ = 115044663360.

The previous prime is 126820699477. The next prime is 126820699507. The reversal of 126820699489 is 984996028621.

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

It is not a de Polignac number, because 126820699489 - 2¹³ = 126820691297 is a prime.

It is a super-2 number, since 2×126820699489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126820699489.

It is not an unprimeable number, because it can be changed into a prime (126820699409) 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, 12338712 + ... + 12348985.

It is an arithmetic number, because the mean of its divisors is an integer number (17330763996).

Almost surely, 2^126820699489 is an apocalyptic number.

It is an amenable number.

126820699489 is a deficient number, since it is larger than the sum of its proper divisors (11825412479).

126820699489 is a wasteful number, since it uses less digits than its factorization.

126820699489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24688175.

The product of its (nonzero) digits is 26873856, while the sum is 64.

The spelling of 126820699489 in words is "one hundred twenty-six billion, eight hundred twenty million, six hundred ninety-nine thousand, four hundred eighty-nine".