78738949270 has 16 divisors (see below), whose sum is σ = 145560652848. Its totient is φ = 30644347680.

The previous prime is 78738949241. The next prime is 78738949301. The reversal of 78738949270 is 7294983787.

It is a congruent number.

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, 106403616 + ... + 106404355.

It is an arithmetic number, because the mean of its divisors is an integer number (9097540803).

Almost surely, 2^78738949270 is an apocalyptic number.

78738949270 is a deficient number, since it is larger than the sum of its proper divisors (66821703578).

78738949270 is a wasteful number, since it uses less digits than its factorization.

78738949270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212808015.

The product of its (nonzero) digits is 42674688, while the sum is 64.

The spelling of 78738949270 in words is "seventy-eight billion, seven hundred thirty-eight million, nine hundred forty-nine thousand, two hundred seventy".