78143430051 has 16 divisors (see below), whose sum is σ = 120801438720. Its totient is φ = 49830592680.

The previous prime is 78143430011. The next prime is 78143430091. The reversal of 78143430051 is 15003434187.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78143430011) and next prime (78143430091).

It is not a de Polignac number, because 78143430051 - 2¹⁰ = 78143429027 is a prime.

It is a super-2 number, since 2×78143430051² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78143429988 and 78143430015.

It is not an unprimeable number, because it can be changed into a prime (78143430011) 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, 62916795 + ... + 62918036.

It is an arithmetic number, because the mean of its divisors is an integer number (7550089920).

Almost surely, 2^78143430051 is an apocalyptic number.

78143430051 is a deficient number, since it is larger than the sum of its proper divisors (42658008669).

78143430051 is a wasteful number, since it uses less digits than its factorization.

78143430051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125834863 (or 125834857 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 78143430051 in words is "seventy-eight billion, one hundred forty-three million, four hundred thirty thousand, fifty-one".