61426550630201 has 4 divisors (see below), whose sum is σ = 61453480290804. Its totient is φ = 61399620969600.

The previous prime is 61426550630173. The next prime is 61426550630261. The reversal of 61426550630201 is 10203605562416.

It is a happy number.

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 45924408330025 + 15502142300176 = 6776755^2 + 3937276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61426550630201 is a prime.

It is a super-2 number, since 2×61426550630201² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61426550630261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13464826880 + ... + 13464831441.

It is an arithmetic number, because the mean of its divisors is an integer number (15363370072701).

Almost surely, 2^{61426550630201} is an apocalyptic number.

It is an amenable number.

61426550630201 is a deficient number, since it is larger than the sum of its proper divisors (26929660603).

61426550630201 is a wasteful number, since it uses less digits than its factorization.

61426550630201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26929660602.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 61426550630201 in words is "sixty-one trillion, four hundred twenty-six billion, five hundred fifty million, six hundred thirty thousand, two hundred one".