102012155553 has 32 divisors (see below), whose sum is σ = 176951642112. Its totient is φ = 50689267200.

The previous prime is 102012155549. The next prime is 102012155569. The reversal of 102012155553 is 355551210201.

It is not a de Polignac number, because 102012155553 - 2² = 102012155549 is a prime.

It is a super-3 number, since 3×102012155553³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102012155553.

It is not an unprimeable number, because it can be changed into a prime (102012155543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9594928 + ... + 9605553.

It is an arithmetic number, because the mean of its divisors is an integer number (5529738816).

Almost surely, 2^102012155553 is an apocalyptic number.

It is an amenable number.

102012155553 is a deficient number, since it is larger than the sum of its proper divisors (74939486559).

102012155553 is a wasteful number, since it uses less digits than its factorization.

102012155553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19200525.

The product of its (nonzero) digits is 7500, while the sum is 30.

Adding to 102012155553 its reverse (355551210201), we get a palindrome (457563365754).

The spelling of 102012155553 in words is "one hundred two billion, twelve million, one hundred fifty-five thousand, five hundred fifty-three".