78070038503 has 4 divisors (see below), whose sum is σ = 79731103200. Its totient is φ = 76408973808.

The previous prime is 78070038499. The next prime is 78070038547. The reversal of 78070038503 is 30583007087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78070038503 - 2² = 78070038499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78070038103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830532278 + ... + 830532371.

It is an arithmetic number, because the mean of its divisors is an integer number (19932775800).

Almost surely, 2^78070038503 is an apocalyptic number.

78070038503 is a deficient number, since it is larger than the sum of its proper divisors (1661064697).

78070038503 is a wasteful number, since it uses less digits than its factorization.

78070038503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661064696.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 78070038503 in words is "seventy-eight billion, seventy million, thirty-eight thousand, five hundred three".