1640155402115 has 8 divisors (see below), whose sum is σ = 1980722703120. Its totient is φ = 1303766841312.

The previous prime is 1640155402079. The next prime is 1640155402139. The reversal of 1640155402115 is 5112045510461.

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 1640155402115 - 2³⁶ = 1571435925379 is a prime.

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, 1044684185 + ... + 1044685754.

It is an arithmetic number, because the mean of its divisors is an integer number (247590337890).

Almost surely, 2^{1640155402115} is an apocalyptic number.

1640155402115 is a deficient number, since it is larger than the sum of its proper divisors (340567301005).

1640155402115 is a wasteful number, since it uses less digits than its factorization.

1640155402115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089370101.

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 1640155402115 in words is "one trillion, six hundred forty billion, one hundred fifty-five million, four hundred two thousand, one hundred fifteen".