78112102002001 has 32 divisors (see below), whose sum is σ = 82861896499200. Its totient is φ = 73513520784000.

The previous prime is 78112102001977. The next prime is 78112102002017. The reversal of 78112102002001 is 10020020121187.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78112102002001 - 2¹⁵ = 78112101969233 is a prime.

It is a super-2 number, since 2×78112102002001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78112102032001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3390417840 + ... + 3390440878.

It is an arithmetic number, because the mean of its divisors is an integer number (2589434265600).

Almost surely, 2^{78112102002001} is an apocalyptic number.

It is an amenable number.

78112102002001 is a deficient number, since it is larger than the sum of its proper divisors (4749794497199).

78112102002001 is a wasteful number, since it uses less digits than its factorization.

78112102002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31501.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 78112102002001 its reverse (10020020121187), we get a palindrome (88132122123188).

The spelling of 78112102002001 in words is "seventy-eight trillion, one hundred twelve billion, one hundred two million, two thousand, one".