516080147978 has 8 divisors (see below), whose sum is σ = 774248130468. Its totient is φ = 257997437824.

The previous prime is 516080147963. The next prime is 516080147987. The reversal of 516080147978 is 879741080615.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 437930268169 + 78149879809 = 661763^2 + 279553^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21302951 + ... + 21327162.

Almost surely, 2^516080147978 is an apocalyptic number.

516080147978 is a deficient number, since it is larger than the sum of its proper divisors (258167982490).

516080147978 is a wasteful number, since it uses less digits than its factorization.

516080147978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42636168.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 516080147978 in words is "five hundred sixteen billion, eighty million, one hundred forty-seven thousand, nine hundred seventy-eight".