61624066155 has 16 divisors (see below), whose sum is σ = 98650255104. Its totient is φ = 32848918880.

The previous prime is 61624066151. The next prime is 61624066183. The reversal of 61624066155 is 55166042616.

It is not a de Polignac number, because 61624066155 - 2² = 61624066151 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61624066151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048551 + ... + 1105760.

It is an arithmetic number, because the mean of its divisors is an integer number (6165640944).

Almost surely, 2^61624066155 is an apocalyptic number.

61624066155 is a deficient number, since it is larger than the sum of its proper divisors (37026188949).

61624066155 is a wasteful number, since it uses less digits than its factorization.

61624066155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156226.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 61624066155 in words is "sixty-one billion, six hundred twenty-four million, sixty-six thousand, one hundred fifty-five".