10105105151551 has 4 divisors (see below), whose sum is σ = 10431076285504. Its totient is φ = 9779134017600.

The previous prime is 10105105151543. The next prime is 10105105151663. The reversal of 10105105151551 is 15515150150101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10105105151551 - 2³ = 10105105151543 is a prime.

It is a super-2 number, since 2×10105105151551² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 325971133921 = 10105105151551 / (1 + 0 + 1 + 0 + 5 + 1 + 0 + 5 + 1 + 5 + 1 + 5 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10105105151521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162985566930 + ... + 162985566991.

It is an arithmetic number, because the mean of its divisors is an integer number (2607769071376).

Almost surely, 2^{10105105151551} is an apocalyptic number.

10105105151551 is a deficient number, since it is larger than the sum of its proper divisors (325971133953).

10105105151551 is an equidigital number, since it uses as much as digits as its factorization.

10105105151551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325971133952.

The product of its (nonzero) digits is 3125, while the sum is 31.

The spelling of 10105105151551 in words is "ten trillion, one hundred five billion, one hundred five million, one hundred fifty-one thousand, five hundred fifty-one".