101778412 has 6 divisors (see below), whose sum is σ = 178112228. Its totient is φ = 50889204.

The previous prime is 101778373. The next prime is 101778419. The reversal of 101778412 is 214877101.

It is not an unprimeable number, because it can be changed into a prime (101778419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12722298 + ... + 12722305.

Almost surely, 2^101778412 is an apocalyptic number.

It is an amenable number.

101778412 is a deficient number, since it is larger than the sum of its proper divisors (76333816).

101778412 is a wasteful number, since it uses less digits than its factorization.

101778412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25444607 (or 25444605 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 101778412 is about 10088.5287331702. The cubic root of 101778412 is about 466.8942837461.

The spelling of 101778412 in words is "one hundred one million, seven hundred seventy-eight thousand, four hundred twelve".