2451664661542 has 32 divisors (see below), whose sum is σ = 3995015792544. Its totient is φ = 1123828531200.

The previous prime is 2451664661539. The next prime is 2451664661569.

2451664661542 is nontrivially palindromic in base 10.

2451664661542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2451664661542² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2451664661542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478308 + ... + 2265415.

It is an arithmetic number, because the mean of its divisors is an integer number (124844243517).

Almost surely, 2^{2451664661542} is an apocalyptic number.

2451664661542 is a deficient number, since it is larger than the sum of its proper divisors (1543351131002).

2451664661542 is a wasteful number, since it uses less digits than its factorization.

2451664661542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744424.

The product of its digits is 8294400, while the sum is 52.

The spelling of 2451664661542 in words is "two trillion, four hundred fifty-one billion, six hundred sixty-four million, six hundred sixty-one thousand, five hundred forty-two".