1628997555085 has 16 divisors (see below), whose sum is σ = 2002665111552. Its totient is φ = 1271292048000.

The previous prime is 1628997555083. The next prime is 1628997555089. The reversal of 1628997555085 is 5805557998261.

It is not a de Polignac number, because 1628997555085 - 2¹ = 1628997555083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628997555083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819060 + ... + 2562610.

It is an arithmetic number, because the mean of its divisors is an integer number (125166569472).

Almost surely, 2^{1628997555085} is an apocalyptic number.

It is an amenable number.

1628997555085 is a deficient number, since it is larger than the sum of its proper divisors (373667556467).

1628997555085 is a wasteful number, since it uses less digits than its factorization.

1628997555085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754284.

The product of its (nonzero) digits is 272160000, while the sum is 70.

The spelling of 1628997555085 in words is "one trillion, six hundred twenty-eight billion, nine hundred ninety-seven million, five hundred fifty-five thousand, eighty-five".