78251321469 has 8 divisors (see below), whose sum is σ = 104336491392. Its totient is φ = 52166849600.

The previous prime is 78251321461. The next prime is 78251321513. The reversal of 78251321469 is 96412315287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78251321469 - 2³ = 78251321461 is a prime.

It is a super-2 number, since 2×78251321469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78251321461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204892 + ... + 445514.

It is an arithmetic number, because the mean of its divisors is an integer number (13042061424).

Almost surely, 2^78251321469 is an apocalyptic number.

It is an amenable number.

78251321469 is a deficient number, since it is larger than the sum of its proper divisors (26085169923).

78251321469 is a wasteful number, since it uses less digits than its factorization.

78251321469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349027.

The product of its digits is 725760, while the sum is 48.

The spelling of 78251321469 in words is "seventy-eight billion, two hundred fifty-one million, three hundred twenty-one thousand, four hundred sixty-nine".