145390833903 has 16 divisors (see below), whose sum is σ = 221554745600. Its totient is φ = 83077923456.

The previous prime is 145390833883. The next prime is 145390833923. The reversal of 145390833903 is 309338093541.

It is an interprime number because it is at equal distance from previous prime (145390833883) and next prime (145390833923).

It is not a de Polignac number, because 145390833903 - 2⁸ = 145390833647 is a prime.

It is a super-2 number, since 2×145390833903² (a number of 23 digits) contains 22 as substring.

It is the 381302-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145390833923) by changing a digit.

It is a nontrivial repunit in base 381301.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755751 + ... + 928407.

It is an arithmetic number, because the mean of its divisors is an integer number (13847171600).

Almost surely, 2^145390833903 is an apocalyptic number.

145390833903 is a deficient number, since it is larger than the sum of its proper divisors (76163911697).

145390833903 is a wasteful number, since it uses less digits than its factorization.

145390833903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212766.

The product of its (nonzero) digits is 1049760, while the sum is 48.

The spelling of 145390833903 in words is "one hundred forty-five billion, three hundred ninety million, eight hundred thirty-three thousand, nine hundred three".