61001121453 has 4 divisors (see below), whose sum is σ = 81334828608. Its totient is φ = 40667414300.

The previous prime is 61001121427. The next prime is 61001121497. The reversal of 61001121453 is 35412110016.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 61001121453 - 2⁵ = 61001121421 is a prime.

It is a super-2 number, since 2×61001121453² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001121253) 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, 10166853573 + ... + 10166853578.

It is an arithmetic number, because the mean of its divisors is an integer number (20333707152).

Almost surely, 2^61001121453 is an apocalyptic number.

It is an amenable number.

61001121453 is a deficient number, since it is larger than the sum of its proper divisors (20333707155).

61001121453 is a wasteful number, since it uses less digits than its factorization.

61001121453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20333707154.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 61001121453 its reverse (35412110016), we get a palindrome (96413231469).

The spelling of 61001121453 in words is "sixty-one billion, one million, one hundred twenty-one thousand, four hundred fifty-three".