61556650154 has 8 divisors (see below), whose sum is σ = 92396088288. Its totient is φ = 30757954060.

The previous prime is 61556650153. The next prime is 61556650163. The reversal of 61556650154 is 45105665516.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61556650153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10181732 + ... + 10187775.

It is an arithmetic number, because the mean of its divisors is an integer number (11549511036).

Almost surely, 2^61556650154 is an apocalyptic number.

61556650154 is a deficient number, since it is larger than the sum of its proper divisors (30839438134).

61556650154 is a wasteful number, since it uses less digits than its factorization.

61556650154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20371020.

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 61556650154 in words is "sixty-one billion, five hundred fifty-six million, six hundred fifty thousand, one hundred fifty-four".