2102451111662 has 24 divisors (see below), whose sum is σ = 3578258582976. Its totient is φ = 924831864000.

The previous prime is 2102451111661. The next prime is 2102451111671. The reversal of 2102451111662 is 2661111542012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102451111661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140118539 + ... + 140133542.

It is an arithmetic number, because the mean of its divisors is an integer number (149094107624).

Almost surely, 2^{2102451111662} is an apocalyptic number.

2102451111662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2102451111662 is a deficient number, since it is larger than the sum of its proper divisors (1475807471314).

2102451111662 is a wasteful number, since it uses less digits than its factorization.

2102451111662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280252136 (or 280252125 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

Adding to 2102451111662 its reverse (2661111542012), we get a palindrome (4763562653674).

The spelling of 2102451111662 in words is "two trillion, one hundred two billion, four hundred fifty-one million, one hundred eleven thousand, six hundred sixty-two".