61226432646 has 16 divisors (see below), whose sum is σ = 123232821744. Its totient is φ = 20278818144.

The previous prime is 61226432609. The next prime is 61226432711. The reversal of 61226432646 is 64623462216.

It is a super-2 number, since 2×61226432646² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61226432598 and 61226432607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32497165 + ... + 32499048.

It is an arithmetic number, because the mean of its divisors is an integer number (7702051359).

Almost surely, 2^61226432646 is an apocalyptic number.

61226432646 is an abundant number, since it is smaller than the sum of its proper divisors (62006389098).

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

61226432646 is a wasteful number, since it uses less digits than its factorization.

61226432646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64996375.

The product of its digits is 497664, while the sum is 42.

The spelling of 61226432646 in words is "sixty-one billion, two hundred twenty-six million, four hundred thirty-two thousand, six hundred forty-six".