1699329598421 has 16 divisors (see below), whose sum is σ = 2214510971904. Its totient is φ = 1265434838784.

The previous prime is 1699329598381. The next prime is 1699329598453. The reversal of 1699329598421 is 1248959239961.

It is a cyclic number.

It is not a de Polignac number, because 1699329598421 - 2²⁶ = 1699262489557 is a prime.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1699329598471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549232325 + ... + 549235418.

It is an arithmetic number, because the mean of its divisors is an integer number (138406935744).

Almost surely, 2^{1699329598421} is an apocalyptic number.

It is an amenable number.

1699329598421 is a deficient number, since it is larger than the sum of its proper divisors (515181373483).

1699329598421 is a wasteful number, since it uses less digits than its factorization.

1699329598421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098467780.

The product of its digits is 75582720, while the sum is 68.

The spelling of 1699329598421 in words is "one trillion, six hundred ninety-nine billion, three hundred twenty-nine million, five hundred ninety-eight thousand, four hundred twenty-one".