13757764642 has 4 divisors (see below), whose sum is σ = 20636646966. Its totient is φ = 6878882320.

The previous prime is 13757764627. The next prime is 13757764661. The reversal of 13757764642 is 24646775731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24646775731 = 14779 ⋅1667689.

It can be written as a sum of positive squares in only one way, i.e., 9704023081 + 4053741561 = 98509^2 + 63669^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13757764642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3439441159 + ... + 3439441162.

Almost surely, 2^13757764642 is an apocalyptic number.

13757764642 is a deficient number, since it is larger than the sum of its proper divisors (6878882324).

13757764642 is an equidigital number, since it uses as much as digits as its factorization.

13757764642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878882323.

The product of its digits is 5927040, while the sum is 52.

The spelling of 13757764642 in words is "thirteen billion, seven hundred fifty-seven million, seven hundred sixty-four thousand, six hundred forty-two".