78622622687 has 16 divisors (see below), whose sum is σ = 94864323840. Its totient is φ = 63654450048.

The previous prime is 78622622657. The next prime is 78622622719.

78622622687 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78622622687 - 2¹⁴ = 78622606303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78622622627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 832253 + ... + 921894.

It is an arithmetic number, because the mean of its divisors is an integer number (5929020240).

Almost surely, 2^78622622687 is an apocalyptic number.

78622622687 is a deficient number, since it is larger than the sum of its proper divisors (16241701153).

78622622687 is a wasteful number, since it uses less digits than its factorization.

78622622687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754510.

The product of its digits is 10838016, while the sum is 56.

The spelling of 78622622687 in words is "seventy-eight billion, six hundred twenty-two million, six hundred twenty-two thousand, six hundred eighty-seven".