61657167622755 has 32 divisors (see below), whose sum is σ = 100589022167040. Its totient is φ = 32238912218240.

The previous prime is 61657167622747. The next prime is 61657167622783. The reversal of 61657167622755 is 55722676175616.

It is a happy number.

61657167622755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61657167622755 - 2³ = 61657167622747 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 28351011 + ... + 30448220.

It is an arithmetic number, because the mean of its divisors is an integer number (3143406942720).

Almost surely, 2^{61657167622755} is an apocalyptic number.

61657167622755 is a deficient number, since it is larger than the sum of its proper divisors (38931854544285).

61657167622755 is a wasteful number, since it uses less digits than its factorization.

61657167622755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58800611.

The product of its digits is 222264000, while the sum is 66.

The spelling of 61657167622755 in words is "sixty-one trillion, six hundred fifty-seven billion, one hundred sixty-seven million, six hundred twenty-two thousand, seven hundred fifty-five".