2151445214505 has 32 divisors (see below), whose sum is σ = 3445030854144. Its totient is φ = 1146531649536.

The previous prime is 2151445214497. The next prime is 2151445214531. The reversal of 2151445214505 is 5054125441512.

It is not a de Polignac number, because 2151445214505 - 2³ = 2151445214497 is a prime.

It is a super-2 number, since 2×2151445214505² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125535297 + ... + 125552433.

It is an arithmetic number, because the mean of its divisors is an integer number (107657214192).

Almost surely, 2^{2151445214505} is an apocalyptic number.

It is an amenable number.

2151445214505 is a deficient number, since it is larger than the sum of its proper divisors (1293585639639).

2151445214505 is a wasteful number, since it uses less digits than its factorization.

2151445214505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23265.

The product of its (nonzero) digits is 160000, while the sum is 39.

The spelling of 2151445214505 in words is "two trillion, one hundred fifty-one billion, four hundred forty-five million, two hundred fourteen thousand, five hundred five".