145531401351 has 24 divisors (see below), whose sum is σ = 226236447360. Its totient is φ = 82971331632.

The previous prime is 145531401347. The next prime is 145531401391. The reversal of 145531401351 is 153104135541.

It is a happy number.

It is not a de Polignac number, because 145531401351 - 2² = 145531401347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145531401331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1063041 + ... + 1192106.

It is an arithmetic number, because the mean of its divisors is an integer number (9426518640).

Almost surely, 2^145531401351 is an apocalyptic number.

145531401351 is a deficient number, since it is larger than the sum of its proper divisors (80705046009).

145531401351 is a wasteful number, since it uses less digits than its factorization.

145531401351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255603 (or 2255596 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 145531401351 its reverse (153104135541), we get a palindrome (298635536892).

The spelling of 145531401351 in words is "one hundred forty-five billion, five hundred thirty-one million, four hundred one thousand, three hundred fifty-one".