102045400401 has 16 divisors (see below), whose sum is σ = 155514847104. Its totient is φ = 58305247104.

The previous prime is 102045400367. The next prime is 102045400409. The reversal of 102045400401 is 104004540201.

It is a happy number.

It is not a de Polignac number, because 102045400401 - 2¹¹ = 102045398353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102045400409) 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, 68070 + ... + 456863.

It is an arithmetic number, because the mean of its divisors is an integer number (9719677944).

Almost surely, 2^102045400401 is an apocalyptic number.

It is an amenable number.

102045400401 is a deficient number, since it is larger than the sum of its proper divisors (53469446703).

102045400401 is an equidigital number, since it uses as much as digits as its factorization.

102045400401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534200.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 102045400401 its reverse (104004540201), we get a palindrome (206049940602).

The spelling of 102045400401 in words is "one hundred two billion, forty-five million, four hundred thousand, four hundred one".