1009179421272 has 48 divisors (see below), whose sum is σ = 2981666474280. Its totient is φ = 305811945600.

The previous prime is 1009179421199. The next prime is 1009179421291. The reversal of 1009179421272 is 2721249719001.

It is a happy number.

1009179421272 is a `hidden beast` number, since 1 + 0 + 0 + 91 + 79 + 421 + 2 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637107429 + ... + 637109012.

Almost surely, 2^{1009179421272} is an apocalyptic number.

1009179421272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1009179421272 is an abundant number, since it is smaller than the sum of its proper divisors (1972487053008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1009179421272 is a wasteful number, since it uses less digits than its factorization.

1009179421272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274216464 (or 1274216457 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 1009179421272 in words is "one trillion, nine billion, one hundred seventy-nine million, four hundred twenty-one thousand, two hundred seventy-two".