3640120084555 has 8 divisors (see below), whose sum is σ = 4368401470800. Its totient is φ = 2911924488096.

The previous prime is 3640120084529. The next prime is 3640120084561. The reversal of 3640120084555 is 5554800210463.

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 3640120084555 - 2²¹ = 3640117987403 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, 21354060 + ... + 21523849.

It is an arithmetic number, because the mean of its divisors is an integer number (546050183850).

Almost surely, 2^{3640120084555} is an apocalyptic number.

3640120084555 is a deficient number, since it is larger than the sum of its proper divisors (728281386245).

3640120084555 is a wasteful number, since it uses less digits than its factorization.

3640120084555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42894893.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 3640120084555 in words is "three trillion, six hundred forty billion, one hundred twenty million, eighty-four thousand, five hundred fifty-five".