78298199830 has 16 divisors (see below), whose sum is σ = 141091481664. Its totient is φ = 31284897280.

The previous prime is 78298199797. The next prime is 78298199849. The reversal of 78298199830 is 3899189287.

It is a super-2 number, since 2×78298199830² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4288267 + ... + 4306486.

It is an arithmetic number, because the mean of its divisors is an integer number (8818217604).

Almost surely, 2^78298199830 is an apocalyptic number.

78298199830 is a deficient number, since it is larger than the sum of its proper divisors (62793281834).

78298199830 is a wasteful number, since it uses less digits than its factorization.

78298199830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8595671.

The product of its (nonzero) digits is 15676416, while the sum is 64.

The spelling of 78298199830 in words is "seventy-eight billion, two hundred ninety-eight million, one hundred ninety-nine thousand, eight hundred thirty".