145356831487 has 8 divisors (see below), whose sum is σ = 167180196896. Its totient is φ = 123797992032.

The previous prime is 145356831439. The next prime is 145356831553. The reversal of 145356831487 is 784138653541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145356831487 - 2¹⁹ = 145356307199 is a prime.

It is a super-2 number, since 2×145356831487² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145356831437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66130308 + ... + 66132505.

It is an arithmetic number, because the mean of its divisors is an integer number (20897524612).

Almost surely, 2^145356831487 is an apocalyptic number.

145356831487 is a deficient number, since it is larger than the sum of its proper divisors (21823365409).

145356831487 is a wasteful number, since it uses less digits than its factorization.

145356831487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132262977.

The product of its digits is 9676800, while the sum is 55.

The spelling of 145356831487 in words is "one hundred forty-five billion, three hundred fifty-six million, eight hundred thirty-one thousand, four hundred eighty-seven".