61126562215 has 16 divisors (see below), whose sum is σ = 78142780800. Its totient is φ = 45769331232.

The previous prime is 61126562179. The next prime is 61126562269. The reversal of 61126562215 is 51226562116.

It is a cyclic number.

It is not a de Polignac number, because 61126562215 - 2²¹ = 61124465063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3868245 + ... + 3884014.

It is an arithmetic number, because the mean of its divisors is an integer number (4883923800).

Almost surely, 2^61126562215 is an apocalyptic number.

61126562215 is a deficient number, since it is larger than the sum of its proper divisors (17016218585).

61126562215 is a wasteful number, since it uses less digits than its factorization.

61126562215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752366.

The product of its digits is 43200, while the sum is 37.

Subtracting from 61126562215 its reverse (51226562116), we obtain a palindrome (9900000099).

The spelling of 61126562215 in words is "sixty-one billion, one hundred twenty-six million, five hundred sixty-two thousand, two hundred fifteen".