101978214705 has 48 divisors (see below), whose sum is σ = 188263368384. Its totient is φ = 52918401600.

The previous prime is 101978214691. The next prime is 101978214707. The reversal of 101978214705 is 507412879101.

It is a happy number.

101978214705 is a `hidden beast` number, since 10 + 1 + 97 + 82 + 1 + 470 + 5 = 666.

It is not a de Polignac number, because 101978214705 - 2⁷ = 101978214577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (101978214707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1089271 + ... + 1179180.

It is an arithmetic number, because the mean of its divisors is an integer number (3922153508).

Almost surely, 2^101978214705 is an apocalyptic number.

101978214705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101978214705 is a deficient number, since it is larger than the sum of its proper divisors (86285153679).

101978214705 is an equidigital number, since it uses as much as digits as its factorization.

101978214705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268508 (or 2268496 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The spelling of 101978214705 in words is "one hundred one billion, nine hundred seventy-eight million, two hundred fourteen thousand, seven hundred five".