1699697405953 has 4 divisors (see below), whose sum is σ = 1699702712788. Its totient is φ = 1699692099120.

The previous prime is 1699697405927. The next prime is 1699697406019. The reversal of 1699697405953 is 3595047969961.

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 266486185729 + 1433211220224 = 516223^2 + 1197168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1699697405953 - 2⁵ = 1699697405921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1699697405753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2139858 + ... + 2824603.

It is an arithmetic number, because the mean of its divisors is an integer number (424925678197).

Almost surely, 2^{1699697405953} is an apocalyptic number.

It is an amenable number.

1699697405953 is a deficient number, since it is larger than the sum of its proper divisors (5306835).

1699697405953 is an equidigital number, since it uses as much as digits as its factorization.

1699697405953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306834.

The product of its (nonzero) digits is 496011600, while the sum is 73.

The spelling of 1699697405953 in words is "one trillion, six hundred ninety-nine billion, six hundred ninety-seven million, four hundred five thousand, nine hundred fifty-three".