3618993868840 has 32 divisors (see below), whose sum is σ = 9305984234880. Its totient is φ = 1240797897792.

The previous prime is 3618993868837. The next prime is 3618993868877. The reversal of 3618993868840 is 488683998163.

It is a super-2 number, since 2×3618993868840² (a number of 26 digits) contains 22 as substring.

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, 6462488772 + ... + 6462489331.

It is an arithmetic number, because the mean of its divisors is an integer number (290812007340).

Almost surely, 2^{3618993868840} is an apocalyptic number.

It is an amenable number.

3618993868840 is an abundant number, since it is smaller than the sum of its proper divisors (5686990366040).

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

3618993868840 is a wasteful number, since it uses less digits than its factorization.

3618993868840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12924978121 (or 12924978117 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 73.

The spelling of 3618993868840 in words is "three trillion, six hundred eighteen billion, nine hundred ninety-three million, eight hundred sixty-eight thousand, eight hundred forty".