102045400399 has 4 divisors (see below), whose sum is σ = 103055751000. Its totient is φ = 101035049800.

The previous prime is 102045400367. The next prime is 102045400409. The reversal of 102045400399 is 993004540201.

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

It is a cyclic number.

It is not a de Polignac number, because 102045400399 - 2⁵ = 102045400367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102045400309) 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, 505175149 + ... + 505175350.

It is an arithmetic number, because the mean of its divisors is an integer number (25763937750).

Almost surely, 2^102045400399 is an apocalyptic number.

102045400399 is a deficient number, since it is larger than the sum of its proper divisors (1010350601).

102045400399 is a wasteful number, since it uses less digits than its factorization.

102045400399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010350600.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 102045400399 in words is "one hundred two billion, forty-five million, four hundred thousand, three hundred ninety-nine".