2158937762509 has 8 divisors (see below), whose sum is σ = 2418859016928. Its totient is φ = 1909625538960.

The previous prime is 2158937762441. The next prime is 2158937762521. The reversal of 2158937762509 is 9052677398512.

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 2158937762509 - 2¹⁹ = 2158937238221 is a prime.

It is a super-2 number, since 2×2158937762509² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158937766509) 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, 2652257287 + ... + 2652258100.

It is an arithmetic number, because the mean of its divisors is an integer number (302357377116).

Almost surely, 2^{2158937762509} is an apocalyptic number.

It is an amenable number.

2158937762509 is a deficient number, since it is larger than the sum of its proper divisors (259921254419).

2158937762509 is a wasteful number, since it uses less digits than its factorization.

2158937762509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5304515435.

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 2158937762509 in words is "two trillion, one hundred fifty-eight billion, nine hundred thirty-seven million, seven hundred sixty-two thousand, five hundred nine".