145121024414251 has 4 divisors (see below), whose sum is σ = 145174912654752. Its totient is φ = 145067136173752.

The previous prime is 145121024414237. The next prime is 145121024414257. The reversal of 145121024414251 is 152414420121541.

145121024414251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 145121024414251 - 2²¹ = 145121022317099 is a prime.

It is a super-2 number, since 2×145121024414251² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145121024414251.

It is not an unprimeable number, because it can be changed into a prime (145121024414257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26944116211 + ... + 26944121596.

It is an arithmetic number, because the mean of its divisors is an integer number (36293728163688).

Almost surely, 2^{145121024414251} is an apocalyptic number.

145121024414251 is a deficient number, since it is larger than the sum of its proper divisors (53888240501).

145121024414251 is an equidigital number, since it uses as much as digits as its factorization.

145121024414251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53888240500.

The product of its (nonzero) digits is 51200, while the sum is 37.

Adding to 145121024414251 its reverse (152414420121541), we get a palindrome (297535444535792).

The spelling of 145121024414251 in words is "one hundred forty-five trillion, one hundred twenty-one billion, twenty-four million, four hundred fourteen thousand, two hundred fifty-one".