78289122953601 has 48 divisors (see below), whose sum is σ = 131365280417280. Its totient is φ = 44000769144960.

The previous prime is 78289122953597. The next prime is 78289122953653. The reversal of 78289122953601 is 10635922198287.

78289122953601 is a `hidden beast` number, since 7 + 8 + 2 + 8 + 9 + 12 + 2 + 9 + 5 + 3 + 601 = 666.

It is not a de Polignac number, because 78289122953601 - 2² = 78289122953597 is a prime.

It is a super-2 number, since 2×78289122953601² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (78289122951601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68565496 + ... + 69697958.

It is an arithmetic number, because the mean of its divisors is an integer number (2736776675360).

Almost surely, 2^{78289122953601} is an apocalyptic number.

It is an amenable number.

78289122953601 is a deficient number, since it is larger than the sum of its proper divisors (53076157463679).

78289122953601 is a wasteful number, since it uses less digits than its factorization.

78289122953601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150526 (or 1150523 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 78289122953601 in words is "seventy-eight trillion, two hundred eighty-nine billion, one hundred twenty-two million, nine hundred fifty-three thousand, six hundred one".