1209145927357 has 8 divisors (see below), whose sum is σ = 1335936165696. Its totient is φ = 1088540578752.

The previous prime is 1209145927349. The next prime is 1209145927417. The reversal of 1209145927357 is 7537295419021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1209145927357 - 2³ = 1209145927349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1209145927298 and 1209145927307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209145927657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546222023 + ... + 1546222804.

It is an arithmetic number, because the mean of its divisors is an integer number (166992020712).

Almost surely, 2^{1209145927357} is an apocalyptic number.

1209145927357 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1209145927357 is a deficient number, since it is larger than the sum of its proper divisors (126790238339).

1209145927357 is a wasteful number, since it uses less digits than its factorization.

1209145927357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092444867.

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 1209145927357 in words is "one trillion, two hundred nine billion, one hundred forty-five million, nine hundred twenty-seven thousand, three hundred fifty-seven".