45215531655 has 16 divisors (see below), whose sum is σ = 82679829504. Its totient is φ = 20669957280.

The previous prime is 45215531653. The next prime is 45215531671. The reversal of 45215531655 is 55613551254.

It is a happy number.

It is not a de Polignac number, because 45215531655 - 2¹ = 45215531653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45215531651) 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, 215311951 + ... + 215312160.

It is an arithmetic number, because the mean of its divisors is an integer number (5167489344).

Almost surely, 2^45215531655 is an apocalyptic number.

45215531655 is a deficient number, since it is larger than the sum of its proper divisors (37464297849).

45215531655 is a wasteful number, since it uses less digits than its factorization.

45215531655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430624126.

The product of its digits is 450000, while the sum is 42.

The spelling of 45215531655 in words is "forty-five billion, two hundred fifteen million, five hundred thirty-one thousand, six hundred fifty-five".