2145102155102 has 4 divisors (see below), whose sum is σ = 3217653232656. Its totient is φ = 1072551077550.

The previous prime is 2145102155101. The next prime is 2145102155107. The reversal of 2145102155102 is 2015512015412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145102155101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536275538774 + ... + 536275538777.

It is an arithmetic number, because the mean of its divisors is an integer number (804413308164).

Almost surely, 2^{2145102155102} is an apocalyptic number.

2145102155102 is a deficient number, since it is larger than the sum of its proper divisors (1072551077554).

2145102155102 is a wasteful number, since it uses less digits than its factorization.

2145102155102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072551077553.

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 2145102155102 in words is "two trillion, one hundred forty-five billion, one hundred two million, one hundred fifty-five thousand, one hundred two".