10042502155521 has 16 divisors (see below), whose sum is σ = 15466527384768. Its totient is φ = 5728343475200.

The previous prime is 10042502155489. The next prime is 10042502155531. The reversal of 10042502155521 is 12555120524001.

It is a cyclic number.

It is not a de Polignac number, because 10042502155521 - 2⁵ = 10042502155489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (10042502155531) 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, 8950536120 + ... + 8950537241.

It is an arithmetic number, because the mean of its divisors is an integer number (966657961548).

Almost surely, 2^{10042502155521} is an apocalyptic number.

10042502155521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10042502155521 is a deficient number, since it is larger than the sum of its proper divisors (5424025229247).

10042502155521 is a wasteful number, since it uses less digits than its factorization.

10042502155521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17901073392.

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 10042502155521 its reverse (12555120524001), we get a palindrome (22597622679522).

The spelling of 10042502155521 in words is "ten trillion, forty-two billion, five hundred two million, one hundred fifty-five thousand, five hundred twenty-one".