2499545669639 has 8 divisors (see below), whose sum is σ = 2509671656160. Its totient is φ = 2489428412800.

The previous prime is 2499545669629. The next prime is 2499545669641. The reversal of 2499545669639 is 9369665459942.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2499545669639 is a prime.

It is a super-2 number, since 2×2499545669639² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2499545669639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499545669629) 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, 1608302 + ... + 2754219.

It is an arithmetic number, because the mean of its divisors is an integer number (313708957020).

Almost surely, 2^{2499545669639} is an apocalyptic number.

2499545669639 is a deficient number, since it is larger than the sum of its proper divisors (10125986521).

2499545669639 is a wasteful number, since it uses less digits than its factorization.

2499545669639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364841.

The product of its digits is 3401222400, while the sum is 77.

The spelling of 2499545669639 in words is "two trillion, four hundred ninety-nine billion, five hundred forty-five million, six hundred sixty-nine thousand, six hundred thirty-nine".