102078789122 has 6 divisors (see below), whose sum is σ = 153118861443. Its totient is φ = 51039168642.

The previous prime is 102078789097. The next prime is 102078789167. The reversal of 102078789122 is 221987870201.

It can be written as a sum of positive squares in only one way, i.e., 51039394561 + 51039394561 = 225919^2 + 225919^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=225919.

It is a super-3 number, since 3×102078789122³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 338879 + ... + 564797.

Almost surely, 2^102078789122 is an apocalyptic number.

102078789122 is a deficient number, since it is larger than the sum of its proper divisors (51040072321).

102078789122 is an frugal number, since it uses more digits than its factorization.

102078789122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451840 (or 225921 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 102078789122 in words is "one hundred two billion, seventy-eight million, seven hundred eighty-nine thousand, one hundred twenty-two".