78403430487 has 8 divisors (see below), whose sum is σ = 105514897536. Its totient is φ = 51780458552.

The previous prime is 78403430467. The next prime is 78403430507.

78403430487 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (78403430467) and next prime (78403430507).

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 78403430487 - 2³⁶ = 9683953751 is a prime.

It is a super-2 number, since 2×78403430487² (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 (78403430407) 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, 122123403 + ... + 122124044.

It is an arithmetic number, because the mean of its divisors is an integer number (13189362192).

Almost surely, 2^78403430487 is an apocalyptic number.

78403430487 is a deficient number, since it is larger than the sum of its proper divisors (27111467049).

78403430487 is a wasteful number, since it uses less digits than its factorization.

78403430487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244247557.

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 78403430487 in words is "seventy-eight billion, four hundred three million, four hundred thirty thousand, four hundred eighty-seven".