61506306044 has 48 divisors (see below), whose sum is σ = 109684108800. Its totient is φ = 30173520000.

The previous prime is 61506306041. The next prime is 61506306047. The reversal of 61506306044 is 44060360516.

It is an interprime number because it is at equal distance from previous prime (61506306041) and next prime (61506306047).

It is a junction number, because it is equal to n+sod(n) for n = 61506305995 and 61506306013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61506306041) by changing a digit.

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, 60358967 + ... + 60359985.

It is an arithmetic number, because the mean of its divisors is an integer number (2285085600).

Almost surely, 2^61506306044 is an apocalyptic number.

It is an amenable number.

61506306044 is a deficient number, since it is larger than the sum of its proper divisors (48177802756).

61506306044 is a wasteful number, since it uses less digits than its factorization.

61506306044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 61506306044 in words is "sixty-one billion, five hundred six million, three hundred six thousand, forty-four".