78290499029 has 4 divisors (see below), whose sum is σ = 78542237280. Its totient is φ = 78038760780.

The previous prime is 78290499019. The next prime is 78290499061. The reversal of 78290499029 is 92099409287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92099409287 = 17 ⋅5417612311.

It is a cyclic number.

It is not a de Polignac number, because 78290499029 - 2⁴ = 78290499013 is a prime.

It is a super-2 number, since 2×78290499029² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78290499019) 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, 125868659 + ... + 125869280.

It is an arithmetic number, because the mean of its divisors is an integer number (19635559320).

Almost surely, 2^78290499029 is an apocalyptic number.

It is an amenable number.

78290499029 is a deficient number, since it is larger than the sum of its proper divisors (251738251).

78290499029 is a wasteful number, since it uses less digits than its factorization.

78290499029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251738250.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 78290499029 in words is "seventy-eight billion, two hundred ninety million, four hundred ninety-nine thousand, twenty-nine".