78647615003 has 2 divisors, whose sum is σ = 78647615004. Its totient is φ = 78647615002.

The previous prime is 78647614987. The next prime is 78647615047. The reversal of 78647615003 is 30051674687.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78647615003 - 2⁴ = 78647614987 is a prime.

It is a super-2 number, since 2×78647615003² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78647615063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39323807501 + 39323807502.

It is an arithmetic number, because the mean of its divisors is an integer number (39323807502).

Almost surely, 2^78647615003 is an apocalyptic number.

78647615003 is a deficient number, since it is larger than the sum of its proper divisors (1).

78647615003 is an equidigital number, since it uses as much as digits as its factorization.

78647615003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 78647615003 in words is "seventy-eight billion, six hundred forty-seven million, six hundred fifteen thousand, three".