7406621503121 has 4 divisors (see below), whose sum is σ = 7432979587044. Its totient is φ = 7380263419200.

The previous prime is 7406621503097. The next prime is 7406621503139. The reversal of 7406621503121 is 1213051266047.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3451554602896 + 3955066900225 = 1857836^2 + 1988735^2 .

It is a cyclic number.

It is not a de Polignac number, because 7406621503121 - 2³⁸ = 7131743596177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7406621502121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13179041540 + ... + 13179042101.

It is an arithmetic number, because the mean of its divisors is an integer number (1858244896761).

Almost surely, 2^{7406621503121} is an apocalyptic number.

It is an amenable number.

7406621503121 is a deficient number, since it is larger than the sum of its proper divisors (26358083923).

7406621503121 is a wasteful number, since it uses less digits than its factorization.

7406621503121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26358083922.

The product of its (nonzero) digits is 60480, while the sum is 38.

Adding to 7406621503121 its reverse (1213051266047), we get a palindrome (8619672769168).

The spelling of 7406621503121 in words is "seven trillion, four hundred six billion, six hundred twenty-one million, five hundred three thousand, one hundred twenty-one".