61266838434 has 16 divisors (see below), whose sum is σ = 122537906400. Its totient is φ = 20421574560.

The previous prime is 61266838387. The next prime is 61266838459. The reversal of 61266838434 is 43483866216.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30789 + ... + 351399.

It is an arithmetic number, because the mean of its divisors is an integer number (7658619150).

Almost surely, 2^61266838434 is an apocalyptic number.

61266838434 is an abundant number, since it is smaller than the sum of its proper divisors (61271067966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61266838434 is a wasteful number, since it uses less digits than its factorization.

61266838434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352465.

The product of its digits is 3981312, while the sum is 51.

The spelling of 61266838434 in words is "sixty-one billion, two hundred sixty-six million, eight hundred thirty-eight thousand, four hundred thirty-four".