15555535002 has 160 divisors (see below), whose sum is σ = 40977763200. Its totient is φ = 4408447680.

The previous prime is 15555535001. The next prime is 15555535019. The reversal of 15555535002 is 20053555551.

15555535002 is a `hidden beast` number, since 1 + 5 + 55 + 553 + 50 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (15555535001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7278078 + ... + 7280214.

It is an arithmetic number, because the mean of its divisors is an integer number (256111020).

Almost surely, 2^15555535002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15555535002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20488881600).

15555535002 is an abundant number, since it is smaller than the sum of its proper divisors (25422228198).

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

15555535002 is a wasteful number, since it uses less digits than its factorization.

15555535002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303 (or 2280 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The spelling of 15555535002 in words is "fifteen billion, five hundred fifty-five million, five hundred thirty-five thousand, two".