105400402645 has 8 divisors (see below), whose sum is σ = 133920511704. Its totient is φ = 79360303104.

The previous prime is 105400402621. The next prime is 105400402661. The reversal of 105400402645 is 546204004501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25092777649 + 80307624996 = 158407^2 + 283386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105400402645 - 2⁷ = 105400402517 is a prime.

It is a super-2 number, since 2×105400402645² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620002284 + ... + 620002453.

It is an arithmetic number, because the mean of its divisors is an integer number (16740063963).

Almost surely, 2^105400402645 is an apocalyptic number.

It is an amenable number.

105400402645 is a deficient number, since it is larger than the sum of its proper divisors (28520109059).

105400402645 is a wasteful number, since it uses less digits than its factorization.

105400402645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240004759.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 105400402645 in words is "one hundred five billion, four hundred million, four hundred two thousand, six hundred forty-five".