640416541101146 has 16 divisors (see below), whose sum is σ = 963046697339304. Its totient is φ = 319400978966784.

The previous prime is 640416541101143. The next prime is 640416541101229. The reversal of 640416541101146 is 641101145614046.

It can be written as a sum of positive squares in 4 ways, for example, as 422197496028025 + 218219045073121 = 20547445^2 + 14772239^2 .

It is a super-3 number, since 3×640416541101146³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 640416541101097 and 640416541101106.

It is not an unprimeable number, because it can be changed into a prime (640416541101143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600869366 + ... + 601934238.

Almost surely, 2^{640416541101146} is an apocalyptic number.

640416541101146 is a deficient number, since it is larger than the sum of its proper divisors (322630156238158).

640416541101146 is a wasteful number, since it uses less digits than its factorization.

640416541101146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822705.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 640416541101146 in words is "six hundred forty trillion, four hundred sixteen billion, five hundred forty-one million, one hundred one thousand, one hundred forty-six".