1400166521753 has 4 divisors (see below), whose sum is σ = 1400177846580. Its totient is φ = 1400155196928.

The previous prime is 1400166521749. The next prime is 1400166521791. The reversal of 1400166521753 is 3571256610041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85355712649 + 1314810809104 = 292157^2 + 1146652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400166521753 - 2² = 1400166521749 is a prime.

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 1400166521753.

It is not an unprimeable number, because it can be changed into a prime (1400166521653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5474888 + ... + 5724921.

It is an arithmetic number, because the mean of its divisors is an integer number (350044461645).

Almost surely, 2^{1400166521753} is an apocalyptic number.

It is an amenable number.

1400166521753 is a deficient number, since it is larger than the sum of its proper divisors (11324827).

1400166521753 is a wasteful number, since it uses less digits than its factorization.

1400166521753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11324826.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 1400166521753 in words is "one trillion, four hundred billion, one hundred sixty-six million, five hundred twenty-one thousand, seven hundred fifty-three".