145512162661154 has 4 divisors (see below), whose sum is σ = 218268243991734. Its totient is φ = 72756081330576.

The previous prime is 145512162661141. The next prime is 145512162661193. The reversal of 145512162661154 is 451166261215541.

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

It can be written as a sum of positive squares in only one way, i.e., 144571117155529 + 941045505625 = 12023773^2 + 970075^2 .

It is a super-2 number, since 2×145512162661154² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36378040665287 + ... + 36378040665290.

Almost surely, 2^{145512162661154} is an apocalyptic number.

145512162661154 is a deficient number, since it is larger than the sum of its proper divisors (72756081330580).

145512162661154 is an equidigital number, since it uses as much as digits as its factorization.

145512162661154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72756081330579.

The product of its digits is 1728000, while the sum is 50.

The spelling of 145512162661154 in words is "one hundred forty-five trillion, five hundred twelve billion, one hundred sixty-two million, six hundred sixty-one thousand, one hundred fifty-four".