3654851558644 has 96 divisors (see below), whose sum is σ = 7556507086464. Its totient is φ = 1524871249920.

The previous prime is 3654851558641. The next prime is 3654851558647. The reversal of 3654851558644 is 4468551584563.

It is an interprime number because it is at equal distance from previous prime (3654851558641) and next prime (3654851558647).

It is a super-2 number, since 2×3654851558644² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3654851558641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299498247 + ... + 299510449.

It is an arithmetic number, because the mean of its divisors is an integer number (78713615484).

Almost surely, 2^{3654851558644} is an apocalyptic number.

It is an amenable number.

3654851558644 is an abundant number, since it is smaller than the sum of its proper divisors (3901655527820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3654851558644 is a wasteful number, since it uses less digits than its factorization.

3654851558644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15137 (or 15135 counting only the distinct ones).

The product of its digits is 276480000, while the sum is 64.

The spelling of 3654851558644 in words is "three trillion, six hundred fifty-four billion, eight hundred fifty-one million, five hundred fifty-eight thousand, six hundred forty-four".