45121012155 has 24 divisors (see below), whose sum is σ = 80323534512. Its totient is φ = 23414145984.

The previous prime is 45121012141. The next prime is 45121012169. The reversal of 45121012155 is 55121012154.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (45121012141) and next prime (45121012169).

It is not a de Polignac number, because 45121012155 - 2⁹ = 45121011643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13548189 + ... + 13551518.

It is an arithmetic number, because the mean of its divisors is an integer number (3346813938).

Almost surely, 2^45121012155 is an apocalyptic number.

45121012155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

45121012155 is a deficient number, since it is larger than the sum of its proper divisors (35202522357).

45121012155 is a wasteful number, since it uses less digits than its factorization.

45121012155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27099755 (or 27099752 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Subtracting 45121012155 from its reverse (55121012154), we obtain a palindrome (9999999999).

The spelling of 45121012155 in words is "forty-five billion, one hundred twenty-one million, twelve thousand, one hundred fifty-five".