2155632612045 has 32 divisors (see below), whose sum is σ = 3762637522560. Its totient is φ = 1045133322240.

The previous prime is 2155632612017. The next prime is 2155632612047. The reversal of 2155632612045 is 5402162365512.

It is not a de Polignac number, because 2155632612045 - 2⁸ = 2155632611789 is a prime.

It is a super-2 number, since 2×2155632612045² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2155632611988 and 2155632612006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155632612047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10067461 + ... + 10279349.

It is an arithmetic number, because the mean of its divisors is an integer number (117582422580).

Almost surely, 2^{2155632612045} is an apocalyptic number.

It is an amenable number.

2155632612045 is a deficient number, since it is larger than the sum of its proper divisors (1607004910515).

2155632612045 is a wasteful number, since it uses less digits than its factorization.

2155632612045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273565.

The product of its (nonzero) digits is 432000, while the sum is 42.

Adding to 2155632612045 its reverse (5402162365512), we get a palindrome (7557794977557).

The spelling of 2155632612045 in words is "two trillion, one hundred fifty-five billion, six hundred thirty-two million, six hundred twelve thousand, forty-five".