51855187002 has 16 divisors (see below), whose sum is σ = 103712909952. Its totient is φ = 17284639680.

The previous prime is 51855187001. The next prime is 51855187003. The reversal of 51855187002 is 20078155815.

51855187002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51855187001) and next prime (51855187003).

It is not an unprimeable number, because it can be changed into a prime (51855187001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254703 + ... + 410589.

It is an arithmetic number, because the mean of its divisors is an integer number (6482056872).

Almost surely, 2^51855187002 is an apocalyptic number.

51855187002 is an abundant number, since it is smaller than the sum of its proper divisors (51857722950).

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

51855187002 is a wasteful number, since it uses less digits than its factorization.

51855187002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211333.

The product of its (nonzero) digits is 112000, while the sum is 42.

The spelling of 51855187002 in words is "fifty-one billion, eight hundred fifty-five million, one hundred eighty-seven thousand, two".