55210020473640 has 128 divisors (see below), whose sum is σ = 166084164892800. Its totient is φ = 14682312176640.

The previous prime is 55210020473603. The next prime is 55210020473689. The reversal of 55210020473640 is 4637402001255.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1103711830 + ... + 1103761850.

It is an arithmetic number, because the mean of its divisors is an integer number (1297532538225).

Almost surely, 2^{55210020473640} is an apocalyptic number.

It is an amenable number.

55210020473640 is an abundant number, since it is smaller than the sum of its proper divisors (110874144419160).

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

55210020473640 is a wasteful number, since it uses less digits than its factorization.

55210020473640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75067 (or 75063 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

Adding to 55210020473640 its reverse (4637402001255), we get a palindrome (59847422474895).

The spelling of 55210020473640 in words is "fifty-five trillion, two hundred ten billion, twenty million, four hundred seventy-three thousand, six hundred forty".