61236440046 has 32 divisors (see below), whose sum is σ = 137352775680. Its totient is φ = 20221377048.

The previous prime is 61236440029. The next prime is 61236440053. The reversal of 61236440046 is 64004463216.

61236440046 is a `hidden beast` number, since 6 + 1 + 2 + 3 + 644 + 0 + 0 + 4 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5293326 + ... + 5304881.

It is an arithmetic number, because the mean of its divisors is an integer number (4292274240).

Almost surely, 2^61236440046 is an apocalyptic number.

61236440046 is an abundant number, since it is smaller than the sum of its proper divisors (76116335634).

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

61236440046 is a wasteful number, since it uses less digits than its factorization.

61236440046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598325 (or 10598319 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 61236440046 in words is "sixty-one billion, two hundred thirty-six million, four hundred forty thousand, forty-six".