78755441955 has 64 divisors (see below), whose sum is σ = 133203346560. Its totient is φ = 39672528896.

The previous prime is 78755441953. The next prime is 78755441993. The reversal of 78755441955 is 55914455787.

It is a happy number.

It is a Cunningham number, because it is equal to 280634²-1.

It is a cyclic number.

It is not a de Polignac number, because 78755441955 - 2¹ = 78755441953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78755441953) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8133577 + ... + 8143253.

It is an arithmetic number, because the mean of its divisors is an integer number (2081302290).

Almost surely, 2^78755441955 is an apocalyptic number.

78755441955 is a deficient number, since it is larger than the sum of its proper divisors (54447904605).

78755441955 is a wasteful number, since it uses less digits than its factorization.

78755441955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120.

The product of its digits is 35280000, while the sum is 60.

It can be divided in two parts, 78755 and 441955, that added together give a triangular number (520710 = T₁₀₂₀).

The spelling of 78755441955 in words is "seventy-eight billion, seven hundred fifty-five million, four hundred forty-one thousand, nine hundred fifty-five".