2499564162001 has 9 divisors (see below), whose sum is σ = 2562082534609. Its totient is φ = 2438535942400.

The previous prime is 2499564161987. The next prime is 2499564162041. The reversal of 2499564162001 is 1002614659942.

It is a happy number.

The square root of 2499564162001 is 1581001.

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

2499564162001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1404108872401 + 1095455289600 = 1184951^2 + 1046640^2 .

It is not a de Polignac number, because 2499564162001 - 2⁷ = 2499564161873 is a prime.

It is a super-2 number, since 2×2499564162001² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2499564162041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 64801761 + ... + 64840321.

Almost surely, 2^{2499564162001} is an apocalyptic number.

2499564162001 is the 1581001-st square number.

2499564162001 is the 790501-st centered octagonal number.

It is an amenable number.

2499564162001 is a deficient number, since it is larger than the sum of its proper divisors (62518372608).

2499564162001 is an frugal number, since it uses more digits than its factorization.

2499564162001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77204 (or 38602 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 2499564162001 by its sum of digits (49), we get a square (122478643938049 = 11067007²).

The spelling of 2499564162001 in words is "two trillion, four hundred ninety-nine billion, five hundred sixty-four million, one hundred sixty-two thousand, one".