78105811020202 has 16 divisors (see below), whose sum is σ = 140942816879040. Its totient is φ = 31712133797568.

The previous prime is 78105811020199. The next prime is 78105811020253. The reversal of 78105811020202 is 20202011850187.

It is a super-2 number, since 2×78105811020202² (a number of 29 digits) contains 22 as substring.

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, 146815433983 + ... + 146815434514.

It is an arithmetic number, because the mean of its divisors is an integer number (8808926054940).

Almost surely, 2^{78105811020202} is an apocalyptic number.

78105811020202 is a deficient number, since it is larger than the sum of its proper divisors (62837005858838).

78105811020202 is a wasteful number, since it uses less digits than its factorization.

78105811020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293630868525.

The product of its (nonzero) digits is 17920, while the sum is 37.

Adding to 78105811020202 its reverse (20202011850187), we get a palindrome (98307822870389).

The spelling of 78105811020202 in words is "seventy-eight trillion, one hundred five billion, eight hundred eleven million, twenty thousand, two hundred two".