61501150055 has 8 divisors (see below), whose sum is σ = 73806975744. Its totient is φ = 49197189600.

The previous prime is 61501150037. The next prime is 61501150057. The reversal of 61501150055 is 55005110516.

It is a happy number.

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

It is not a de Polignac number, because 61501150055 - 2¹⁴ = 61501133671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61501150057) by changing a digit.

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, 392711 + ... + 526520.

It is an arithmetic number, because the mean of its divisors is an integer number (9225871968).

Almost surely, 2^61501150055 is an apocalyptic number.

61501150055 is a deficient number, since it is larger than the sum of its proper divisors (12305825689).

61501150055 is a wasteful number, since it uses less digits than its factorization.

61501150055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932617.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 61501150055 in words is "sixty-one billion, five hundred one million, one hundred fifty thousand, fifty-five".