78121301002 has 8 divisors (see below), whose sum is σ = 118593782496. Its totient is φ = 38590040172.

The previous prime is 78121300967. The next prime is 78121301017. The reversal of 78121301002 is 20010312187.

It is a happy number.

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

It is a super-2 number, since 2×78121301002² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235304958 + ... + 235305289.

It is an arithmetic number, because the mean of its divisors is an integer number (14824222812).

Almost surely, 2^78121301002 is an apocalyptic number.

78121301002 is a deficient number, since it is larger than the sum of its proper divisors (40472481494).

78121301002 is a wasteful number, since it uses less digits than its factorization.

78121301002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470610332.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 78121301002 its reverse (20010312187), we get a palindrome (98131613189).

The spelling of 78121301002 in words is "seventy-eight billion, one hundred twenty-one million, three hundred one thousand, two".