78951141749 has 16 divisors (see below), whose sum is σ = 79946222400. Its totient is φ = 77963794944.

The previous prime is 78951141743. The next prime is 78951141781. The reversal of 78951141749 is 94714115987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78951141749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78951141694 and 78951141703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78951141743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21825989 + ... + 21829605.

It is an arithmetic number, because the mean of its divisors is an integer number (4996638900).

Almost surely, 2^78951141749 is an apocalyptic number.

It is an amenable number.

78951141749 is a deficient number, since it is larger than the sum of its proper divisors (995080651).

78951141749 is a wasteful number, since it uses less digits than its factorization.

78951141749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612.

The product of its digits is 2540160, while the sum is 56.

The spelling of 78951141749 in words is "seventy-eight billion, nine hundred fifty-one million, one hundred forty-one thousand, seven hundred forty-nine".