145642172535 has 12 divisors (see below), whose sum is σ = 252446432472. Its totient is φ = 77675825328.

The previous prime is 145642172513. The next prime is 145642172573. The reversal of 145642172535 is 535271246541.

145642172535 is a `hidden beast` number, since 1 + 4 + 5 + 6 + 42 + 1 + 72 + 535 = 666.

It is not a de Polignac number, because 145642172535 - 2⁵ = 145642172503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3236492723 = 145642172535 / (1 + 4 + 5 + 6 + 4 + 2 + 1 + 7 + 2 + 5 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1618246317 + ... + 1618246406.

It is an arithmetic number, because the mean of its divisors is an integer number (21037202706).

Almost surely, 2^145642172535 is an apocalyptic number.

145642172535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145642172535 is a deficient number, since it is larger than the sum of its proper divisors (106804259937).

145642172535 is a wasteful number, since it uses less digits than its factorization.

145642172535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236492734 (or 3236492731 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The spelling of 145642172535 in words is "one hundred forty-five billion, six hundred forty-two million, one hundred seventy-two thousand, five hundred thirty-five".