91370122147984 has 15 divisors (see below), whose sum is σ = 177029685742233. Its totient is φ = 45685041956448.

The previous prime is 91370122147933. The next prime is 91370122148029. The reversal of 91370122147984 is 48974122107319.

It is a happy number.

The square root of 91370122147984 is 9558772.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 62680472410000 + 28689649737984 = 7917100^2 + 5356272^2 .

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, 37040242 + ... + 39429934.

Almost surely, 2^{91370122147984} is an apocalyptic number.

91370122147984 is the 9558772-nd square number.

It is an amenable number.

91370122147984 is a deficient number, since it is larger than the sum of its proper divisors (85659563594249).

91370122147984 is an frugal number, since it uses more digits than its factorization.

91370122147984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779394 (or 2389695 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 91370122147984 in words is "ninety-one trillion, three hundred seventy billion, one hundred twenty-two million, one hundred forty-seven thousand, nine hundred eighty-four".